Carbs per day - How To Discuss

Carbs per day

What foods have lots of carbs? Starch includes bread, grains, rice, pasta, couscous, quinoa, potatoes, corn, peas, and legumes such as beans, pinto beans, black beans, lentils, lima beans, and baked beans. For example, a half cup of cooked quinoa contains about 20 grams of carbohydrates, and a half cup of pinto beans contains about 22 grams of carbohydrates.

What are the best time to eat carbs?

Eat carbohydrates. Fast-digesting carbohydrates such as fruits, juices and honey contain simple sugars that should be consumed properly about 1 hour after exercise. In terms of numbers, I would take between 40 and 60 grams of carbohydrates after training.

How many carbs should you eat per day to lose weight?

Some nutritionists recommend a ratio of 40 percent carbohydrates, 30 percent protein, and 30 percent fat as a good target for healthy weight loss. A 1,500 calorie, 40 percent carbohydrate diet equates to 600 daily carbohydrate calories.

What foods are high in carbs?

• Maize. Low-protein, low-fat grains are almost exclusively made up of carbohydrates, especially starch.
• Fruit. Most fruits are low in starch but high in sugar and carbohydrates. Raisins and other dried fruits are especially high in carbohydrates, such as fruit juices.
• Starchy vegetables. Starchy vegetables are aptly named, but don't be put off by their carbohydrate content. They contain fiber, potassium and antioxidants, among other things.
• Legumes (beans, peas, lentils) According to the Linus Pauling Institute, beans, peas, lentils and soybeans are rich in starch, as well as protein, fiber, iron and potassium.
• Sugar and sugary foods and drinks. These foods are less nutritious as stated in the dietary guidelines! They contain carbohydrates from added sugars and often starch.
• I think a high carbohydrate compound. "Mixed" foods are made up of several ingredients. They may be healthy, but often they are not.

How much carbs per day

What foods contain the highest carbohydrates?

Starchy vegetables are higher in carbohydrates and contain about 15 grams of carbohydrates per serving. Individual servings of starchy vegetables include 1/2 cup of corn or peas, 4 ounces of potatoes or sweet potatoes, and 1 cup of pumpkin.

What foods are bad carbohydrates?

• Sweet drinks: Coca-Cola, Pepsi, vitamin water, etc.
• Fruit juices: Unfortunately, fruit juices can have the same metabolic effects as sugary drinks.
• White bread: These are refined carbohydrates with a low content of essential nutrients that are harmful to metabolic health.
• Pastries, cookies and cakes: These are usually very high in sugar and refined wheat.

What kind of food contains lots of carbohydrates?

Some of the carbohydrate-rich foods are bread, muffins and sweet pastries. The carbohydrates in bread and rolls come mainly from grain flours, which are rich in starch, a form of carbohydrates that is broken down into sugars in the digestive tract.

What fruits should I avoid on a very-low-carb diet?

On a very low-carb diet, it's probably a good idea to avoid certain fruits, especially sugary and dried fruits that are high in carbohydrates (9, 10, 11, 12, 13): Banana (1 medium): 27 grams of carbohydrates, of which 3 fiber Raisins (1 oz./28 grams): 22 grams carbs, of which 1 fiber Dates (2 large): 36 grams carbs, of which 4 fiber.

Average carbs per day

What foods have a lot of carbs in them?

Which foods are rich in carbohydrates? 1 sugar and lollipop. Sugar and sweets are rich in carbohydrates but contain no additional nutrients. 2 strong points. Starch includes bread, cereal, rice, pasta, couscous, quinoa, potatoes, corn, 3 fruits and juices. Fruit and fruit juices are rich in carbohydrates.

What happens if you eat too many carbs?

Consuming too many carbohydrates, especially refined carbohydrates such as sugar or corn syrup, can lead to obesity, type II diabetes and cancer. Healthy foods rich in carbohydrates include whole grains, legumes, vegetables, fresh fruits, nuts and seeds. The Daily Value (% RDA) for carbohydrates is 300 grams.

What are the best foods to eat on a low carb diet?

Edible products 1. Meat: all kinds: veal, pork, lamb, game, poultry, etc. 2. Fish and shellfish: all kinds: fatty fish like salmon, mackerel, sardines or herring are great. 3 eggs: all types: boiled, fried, scrambled, omelette, etc.

What are the worst carbs to eat?

• White sugar.
• White flower.
• White rice.
• Alcohol.

How many calories in a carb

What fruits are high in carbohydrates?

• Heavy fruit lunch box. The fruits found in children's lunch boxes are among the most carbohydrate-rich fruits.
• Rich in carbohydrates in tropical fruits. Also tropical fruit often contains a lot of carbohydrates.
• Nuts: Extremely rich in carbohydrates.
• The best fruits to eat are low in carbohydrates.

What foods should you avoid on a low carb diet?

• Sweets and sugary drinks are not low in carbohydrates. Sorry, my sweet tooth!
• Baking can also ruin your diet. Don't go to the bakery, most typical baked goods are off limits if you're on a low-carb diet, like many.
• Practice portion control for healthy starches.
• Create a balanced, low-carb diet.

What vegetables are good in carbs?

Green leafy vegetables such as lettuce, spinach and kale contain good carbohydrates and many other important nutrients. The natural unprocessed foods to include in your diet are nuts and raw seeds such as sunflower seeds and walnuts. Beans, rice and whole grains are another important source of good carbohydrates.

What foods have lots of carbs to gain

A handful or two of nuts such as almonds, cashews, walnuts or pecans per day can add enough calories to your diet to promote healthy weight gain. High-calorie nut butters are also a quick and easy option, but you should opt for natural varieties with no added sugar or butter.

How many carbs per day for a diabetic

What is the best diet to gain weight?

• Pasta. Pasta is another high-calorie source of carbohydrates that makes an excellent base for many meals. Just add the sauce and voila.
• Dry fruits. Treat yourself to a quick calorie boost by eating a handful or two of nuts.
• lawyers. Avocados are rich in monounsaturated fats.

What is the worst carb for belly fat?

The worst carbohydrates to eat to lose belly fat are simple carbohydrates. These include foods such as white bread, pasta, pastries and sugar. In 2015, researchers found that consuming refined carbohydrates leads to more belly fat.

How many calories should I eat to gain weight?

There are many great tools to help. Bottom Line: To gain weight, you need to consume more calories than your body burns. Aim for 300 to 500 calories per day above your maintenance level for slow weight gain, or 700 to 1000 calories if you want to gain weight quickly. The most important nutrient for healthy weight gain is protein.

What fruits and vegetables are high in carbs?

• Dad. These starchy tubers are virtually fat-free and come in thousands of varieties, including Yukon Gold, Kennebec, and Russet.
• Cassava. High-calorie vegetable cassava is high in carbohydrates and contains several vitamins and minerals, including vitamin C, thiamine, riboflavin and niacin.
• Tomatoes.
• Bananas.
• Watermelons.
• Dried onions

How Many Carbs per Day on Keto Diet?

What types of foods are high in carbs?

• Starchy vegetables. Potatoes, sweet potatoes, beets and corn are examples of vegetables that are high in carbohydrates and starch.
• Dust. White flours or whole grains, such as bread, pasta, cereal, pretzels, bagels, crackers, donuts, cakes, cookies and pastries, are high in starch.
• Whole grain.
• Legumes.
• Verivell's word.

What foods can you eat to lower cholesterol?

• High-fiber foods like oatmeal and beans help lower LDL cholesterol.
• Foods rich in unsaturated fats, such as avocados, olive oil and walnuts, help prevent and control high LDL cholesterol and increase good HDL cholesterol.
• Dietary omega-3 fatty acids, such as those found in wild salmon and other fish, have been shown to lower LDL levels and increase HDL levels.

What are some good cholesterol lowering recipes?

Olive oil, which is rich in monounsaturated fats, can help lower blood cholesterol. In addition, some antioxidants in extra virgin olive oil can raise HDL cholesterol (good) and lower triglyceride levels. Prepare this easy pasta dish with 1/4 cup of extra virgin olive oil.

What is the best low cholesterol diet?

• Foods high in saturated fat such as butter, tropical oils such as coconut oil, fatty meats and dairy products such as cheese, cream and whole/skimmed milk.
• Biologic meat
• Processed meats such as hot dogs, bacon and sausage
• Partially hydrogenated vegetable oils (also called trans fats)
• Foods with high cholesterol, such as egg yolks.

What does a low carb diet do to cholesterol?

One of the health benefits of a low-carb diet is that it lowers blood cholesterol. The research results presented here counteract this potential benefit. Research has shown that while a low-carbohydrate diet lowers cholesterol, it lowers both good (HDL) and bad (LDL) cholesterol.

Should you eat carbs before or after you workout?

While the importance of a pre-workout meal can vary depending on the situation, most scientists agree that a post-workout meal is beneficial. Research has shown that certain nutrients, especially proteins and carbohydrates, can help your body recover and adapt after exercise.

How many carbs should I be eating at each meal?

If you eat 2,000 calories per day, you should consume about 250 grams of complex carbohydrates per day. For people with diabetes, it is best to start with 45 to 60 grams of carbohydrates per meal and 15 to 30 grams as a snack.

Are carbs before workout a good thing to eat?

Many people recommend consuming carbohydrates before exercise to increase energy levels and improve performance. Complex carbohydrates should be consumed two to three hours before exercise as they take longer to digest, while simple carbohydrates can be consumed 20 to 30 minutes before exercise.

How many grams of carbs per day

Are there ever good time to eat carbs?

The best time to consume carbohydrates during intermittent fasting is by eating and fasting regularly. If you follow this diet, Patton tells you that you can consume carbohydrates all the time, even if your goal is to lose weight or if you have diabetes or prediabetes.

What are the best time to eat carbs for weight loss

One of the modern theories about carbohydrate distribution is that you eat the most carbohydrates in the morning. The idea is that if you eat carbohydrates early in the day, your body will burn them and burn fat for the rest of the day. This strategy is aimed at improving weight loss.

What are the best carbs for losing weight?

• Integral mass. Whole grains don't burden your body with low-nutrient ingredients (such as white flour products).
• Cereals. While you're waiting for breakfast, oatmeal contains soluble fiber that moves slowly through your digestive system, helping you feel full for longer.
• Popcorn from the sky.

What are the best carbs to eat?

Good carbohydrates: vegetables: everything. It is better to eat different vegetables every day. Whole fruits: apples, bananas, strawberries, etc. Legumes: lentils, beans, peas, etc. Nuts: almonds, walnuts, hazelnuts, macadamia nuts, peanuts, etc. Seeds: chia seeds, pumpkin seeds.

How to calculate macros for keto

What foods help lose weight?

• Oats are high in resistant starch (see Green Bananas below to see how it can help you lose weight)
• Oatmeal keeps you full longer or longer than any other breakfast cereal.
• Oatmeal is high in fiber and studies have shown it can reduce belly fat.

What time of the day is it best to take protein?

Protein is also great for morning rejuvenation. Exercise creates tiny tears in the muscles that need protein for proper repair. The best time to consume protein is within 30 minutes of your workout. This instant hack will help your muscles recover and get stronger.

How much protein should I be eating at each meal?

Optimal protein makes up about 15-25% of your daily calories, which is still lower than what many popular high-protein diets recommend. In a day, this may seem like 20-30 grams per meal and 12-15 grams per snack, just 90-105 grams per day.

Is it better to eat protein before or after a workout?

While proponents disagree on the best time to get the most out of your protein shake, post-workout may be the best option. When you exercise, your body breaks down protein and protein synthesis decreases. Your body also uses its carbohydrate stores, leading to lower glycogen levels, notes the Journal of Sports Science and Medicine.

What foods should you eat for protein?

Beans and tofu are also rich in protein. Good sources of protein include tofu, nuts, seeds, lentils, beans, beef, chicken, turkey, fish, pork, eggs, milk, cheese and yogurt.

How much carbs before workout?

Ideal pre-workout carbohydrate sources depend on how much time you have before exercising. Eat 250 to 500 calories from carbohydrates three to four hours before your workout.

What are some good pre workout carbs?

When digestive issues interfere with your workout, the first thing to do is eliminate complex carbohydrates from your pre-workout diet. Ideal sources of simple carbohydrates are milk, fruit spreads, honey, dark chocolate, yogurt, white bread and fruit juices. Aim for a total of 50 to 100 grams of carbohydrates before exercise.

Best time to eat fruit

Fast in the morning or between meals. Wondering what's the best time to eat fruit? It is recommended to eat the fruit in the morning or between meals on an empty stomach, because at this time digestion is fast enough and the body also uses different types of enzymes to digest the fruit.

How many grams of carbs per day to lose weight

What is the best and worst time to eat fruits?

Best and worst times to eat fruit together Apple breakfast YES, apples contain pectin, which lowers blood sugar and cholesterol levels. Banana lunch YES, Boosts immunity and improves skin condition. Orange Snack SI, Improves digestion and speeds up metabolism. Mango Mango is an energy product.

What is the healthiest fruit to eat every day?

blueberry. Research shows that blueberries, which are rich in fiber and vitamins A and C, also improve cardiovascular health. Aim for 1 cup of fresh blueberries per day or 1/2 cup frozen or dried.

What are the fruits which one should eat every day?

Top Ten Fruits And Vegetables You Should Eat Every Day Blueberries contain antioxidants, especially anthocyanins, which are flavonoids associated with cognitive performance. Pepper. Peppers come in green, yellow, orange and red. Cruciferous vegetables. Leafy vegetables. tomatoes. Sour bananas. Garlic. olives.

Is there a bad time to eat fruit?

The truth is that the fruit can be eaten at any time of the day. There is no evidence that you should avoid fruit in the afternoon or with meals.

What are the best things to eat before a workout?

• Natural Greek yogurt with berries and granola. “Berries and granola provide the fast-digesting carbohydrates needed for exercise, and Greek yogurt provides enough protein for some.”
• A whole fruit smoothie. "Fruits contain simple sugars that are easy to digest," explains Mazur.
• High-protein oatmeal and blueberries.
• Banana with peanut butter and honey.

When is the optimal time to eat after a workout?

Most experts recommend eating within 30 minutes of your workout. This is because your body uses the energy available during exercise and needs to be recharged.

What should I eat before and after cardio workout?

Bottom Line: While some mixed results have been reported, eating before a prolonged workout is likely beneficial. Eating three or more hours before exercise is often recommended, but eating before exercise can be helpful.

When is the most proper time to eat breakfast?

The best time to have breakfast is the first two hours after waking up. The earlier you have breakfast after waking up, the better for your metabolism. Breakfast can help reduce your appetite. Breakfast in the morning drastically reduces hunger and food cravings throughout the day.

Is breakfast the best meal of the day?

Breakfast is the best meal of the day. Ernie wakes a sleeping Bert in the middle of the night to tell him how delicious breakfast is and sings "Breakfast is the best meal of the day", accompanied by a banana, eggs and toast, and a plate of oatmeal. At the end of the song, Bert realizes he is hungry, but Ernie goes back to bed.

Why is breakfast the most important meal of the day?

Breakfast is the most important meal of the day as you should start your active day with your daily intake of vitamins and nutrients. Out of convenience or laziness, most people limit breakfast to a few slices of bread or ready-to-eat convenience foods.

What should I really eat for breakfast?

What do you eat for breakfast. Your breakfast should be high in protein and fiber to keep your engine running and full by noon. Yogurt muesli or skim milk and fruit muesli are quick and easy options. Whole wheat toast with peanut butter and banana or avocado toast with fruit are also delicious.

What are the best time to eat carbs on a cut

“Eating carbs in the morning and afternoon will give you plenty of nutrients throughout the day,” Kirsch says. “Because carbohydrates hold water in your body, you feel full. If at some point you reduce your carbohydrate intake, such as B. By 2:30 a.m, your body has the ability to absorb and remove all the excess water.

Orange carbs

What is the best time of day to eat carbs?

3 Best times to eat carbs 1 Early in the day Eat carbs as your first meal so you can energize your body earlier in the day. 2 Before exercise Do not eat right before exercise because your body needs time to digest food before you start exercising.

Is it better to eat carbs before or after a workout?

However, for most people, eating enough complex and healthy carbohydrates throughout the day is more important than taking the time to build muscle. Athletes and people who exercise intensively can benefit from the timing of carbohydrates. Research shows that eating carbohydrates before and after exercise can help athletes work longer and recover faster.

How long can you go without carbohydrates?

Whether you're on a high-fat or low-fat diet, your body needs carbohydrates almost every day. If you ride a carb bike, you should not be carb-free for more than 23 days. Find out when you should eat carbohydrates and when not.

How can I make sure I'm eating the right amount of carbs?

Patton says following the plate method is an easy way to make sure you're eating the right amount of carbohydrates. Start with a 9'' board. Fill half with vegetables, 1/4 with protein and 1/4 with carbohydrates. If you're an athlete or physically active, dividing your board in three can keep you warm all day.

What time should you really eat dinner by?

• Eat breakfast within an hour of waking up.
• Lunch 4-5 hours after breakfast.
• Eat 4-5 hours after lunch.
• Eat healthy snacks between meals.

What's the most common time to eat dinner?

In general it seems that 7pm. M. And 7:30 PM M. These are the most popular meals in most of the United States. Slightly earlier in rooms with theatrical performances.

What time of day should you really be eating?

The exact time will depend on the person's needs and schedule, but Collison says a good rule of thumb is to eat within an hour of waking up. It's like refueling your car, Collison says. If you plan to exercise in the morning, make sure to eat ahead of time.

What do you eat before dinner?

If you're running in the evening and it's been hours since lunch (but you haven't eaten yet), try a healthy 100-calorie snack about an hour before your run. Ideas include low-fat frozen yogurt, an apple and cheese, or about 40 golden brown cookies.

What foods not to eat when losing weight?

• White rice. Not only does white rice have fewer nutrients than brown rice, but your body can process it so quickly that it will likely spike your blood sugar levels.
• Grape. While grapes are a healthy fruit, they are also high in sugar, which can cause cyclical cravings for other sweets.
• Low calorie snacks.
• Soda without sugar.

How many calories should you be eating daily to lose weight?

Women who are active and run more than 3 miles per day should eat 2,200 or more calories per day to maintain their weight and at least 1,700 calories to lose 1 pound (kg) per week. Young women in their twenties have higher calorie needs. To lose weight you need about 2,200 calories per day.

What is the recommended daily allowance of carbohydrates?

How Many Carbs You Need The Dietary Guidelines for Americans recommends that carbohydrates make up 45 to 65 percent of your total daily calories. So if you eat 2,000 calories a day, 900 to 1,300 calories should come from carbohydrates. This equates to 225 to 325 grams of carbohydrates per day.

How many carbs should a diabetic eat in a day?

The American Diabetes Association once recommended that people consume at least 130 grams of carbohydrates per day, but changed their stance in 2019, claiming that a low-carb diet is a promising way to treat diabetes.

Healthy fats for keto

What is the worst carbohydrate for a diabetic?

Some of the worst carbohydrates to eat for diabetes are: Processed grains such as white rice or white flour. Cereals with few whole grains and a lot of sugar. White bread. Free. Baked tortillas with white flour.

How many total carbohydrates per day for diabetics?

A good start for people with diabetes is 45 to 60 grams of carbohydrates per meal and 15 to 30 grams per snack. While snacks are essential for diabetics taking insulin or pills that increase insulin production (otherwise there is a risk of hypoglycemia), they are not necessary for those not taking insulin.

How much sugar can a diabetic eat per day?

How many grams of sugar can a person with diabetes consume per day? In general, a woman with diabetes should consume no more than 24 grams of sugar per day or 2 tablespoons, and a man with diabetes should consume no more than 36 grams of sugar per day or 3 tablespoons.

Keto carbs per day

Low Carb Keto - Less than 20 grams of carbohydrates per day. This reading will be ketogenic for most people if your protein intake is moderate. In your keto recipes, less than 4% of your total energy comes from carbohydrates and the rest from proteins and fats.

Net carbs in apple

How many carbs should I eat per day on keto?

While everyone needs to limit their carbohydrates to slightly different amounts to get into and stay in ketosis, there is a carbohydrate limit that almost anyone can use to achieve results. This limit for ketogenic carbs is 35 grams of total carbs and 25 grams of net carbs. (Net carbohydrates are determined by subtracting grams of fiber from the total grams of carbohydrates.).

What carbs to eat on keto?

Regular Greek yogurt and cottage cheese are healthy and protein-rich foods. Although they contain carbohydrates, they can still be incorporated into a ketogenic lifestyle. 150 grams of plain Greek yogurt contains 5 grams of carbohydrates and 11 grams of protein.

How many times a day do you eat on keto diet?

Therefore, there is no definitive answer: As a general rule, eat when you are hungry and stop when you are full. Unless you are ketogenic with intermittent fasting. In this case, it may take you a while to adjust to your body's hunger signals, and the fats in your diet should keep you full throughout the day.

What foods have 30 carbs?

• Quinoa.
• Oatmeal.
• Polenta.
• Eggs.
• Beef.
• ■■■■ seeds.
• Shrimp.
• Soy.
• Seitan.
• Peanut butter.

How Many Carbs Does The Average Person Eat

How many carbs per day calculator

Without connection. Since about half of your diet should consist of carbohydrates (4565%), the amount of carbohydrates you need each day is calculated by calculating your daily calorie requirement. After you determine your calorie needs, divide it by 4 (4 calories per gram of carbohydrates) and then multiply it by 0.55 (the approximate percentage of carbohydrates in your diet).

How many calories they should eat minimum per day?

The minimum daily calorie intake is 1200 for women and 1800 for men. However, the calories of starvation are less than 600 calories per day, and consuming calories below the recommended minimum will not give the body the energy it needs to function properly.

What is a good carb amount to lose weight?

For example, if you are on a 2,000 calorie diet, you should aim for 225-325 grams of carbohydrates per day, and if you are taking in 2,500 calories per day, you should aim for 281-406 grams of carbohydrates. Adults who reduce their calorie intake to 1,200 calories per day to lose weight need about 50% of their calories from carbohydrates, or 150 grams per day.

How many grams of carbs per day should you eat on keto?

During ketosis, your body effectively uses fat for fuel. In general, the daily net carbohydrate intake required to enter ketosis can range from 20 to 100 grams per day. Most people who have been in ketosis claim to have reached this state with about 2,050 grams of net carbs per day.

How many carbs should i eat a day

What foods have good carbs?

• whole fruit
• Fresh vegetables
• Beans,
• whole grain
• Potatoes

How many carbs should a man eat per day?

The Institute of Medicine also recommends that adult men get 45 to 65 percent of their daily calories from carbohydrates. This means consuming 225 to 325 grams of carbohydrates per 2,000 calories per day and 338 to 488 grams of carbohydrates per 3,000 calories per day.

What foods do not have carbohydrates?

olives. Spinach. Bok Choi. Cucumber.

How many grams of carbs per day is considered a low carb diet?

Everything else can be called low carb. For a person consuming 2,000 calories per day, this translates to 225-325 grams of carbohydrates per day. Most low-carb diets limit carbohydrate intake to between 50 and 150 grams per day, depending on the diet.

How many grams of carbs should I eat per day to lose weight?

Dietary guidelines recommend that carbohydrates make up 45 to 65 percent of your daily calories. So, if you're on a 2,000-calorie diet, aim for 225 to 325 grams of carbohydrates per day. But if you need to lose weight, you will have much faster results if you eat between 50 and 150 grams of carbohydrates.

How many grams of carbohydrates RDA are recommended per day?

How much do you really need? The current recommended dietary allowance (RDA) for carbohydrates is 130 grams per day. This amount represents the minimum daily intake, not the optimal, and covers your brain and liver needs for optimal function, as well as a little more for your muscles, and it's a good measure.

What do I eat in a day for a keto diet?

Some of the foods you can eat on a ketogenic diet include grass-fed meats (beef, lamb, goat, venison). Pork and shellfish. domestic bird. Eggs.

Fats per day

For the 2,000-calorie diet, the recommended daily fat intake is 44 to 78 g. The recommended daily fat intake for the 1500 and 2500 calorie diet is 33 to 58 g and 56 to 97 g, respectively. They do not need saturated fat from their diet, as they can produce the fat themselves.

How many servings of fats should you eat a day?

Adding healthy monounsaturated fats and omega-3 polyunsaturated fatty acids to your diet will help you lose weight, as their fat content will help you feel full, which is the key to losing weight. They also improve heart health. Aim for four servings (total) of these healthy fats per day.

What is the recommended amount of saturated fat per day?

The American Heart Association recommends that you get no more than 6% of your daily calories from saturated fat. For a daily diet of 2,000 calories, no more than 120 calories (about 13 grams) should come from saturated fat. The bulk of your daily fat should be monounsaturated and polyunsaturated fatty acids.

What percent of fat calories needed per day?

The latest dietary guidelines for Americans recommend limiting saturated fat to less than 10 percent of your calories per day. On a 2,000-calorie diet, that's 200 calories, or about 22 grams of saturated fat.

How many carbs in a banana