Carbohydrates are the main caloric energy source that in muscle cells in the form of glycogen are stored. Carbohydrates can be in different forms through diet. You have the so-called fast carbohydrates (are quickly into the bloodstream) and the slow carbohydrates (are slowly into the bloodstream). The fast carbohydrates can be found in easily digestible (edited) power supply. Examples include: sports drinks, fruit juice (also with sweetener) and fruit. Other examples of fast carbohydrates, such as candies, cakes and pastries, or refined sugars of any sort (bad carbs), just for extra calories in addition to the normal diet. These empty calories are usually taken instead of foods that have an important contribution to the energy supply.

Fast carbohydrates you should eat after a workout, these create a surge of insulin levels in the blood and thus creates a strong anabolic stimulus. Insulin is an anabolic hormone. Also, at the same time also IGF (insulin Growth Factor), a growth hormone that makes for muscle growth. At the moment you just have be a training while taking the fast carbohydrates used to glycogen supply in the muscles and liver. And provide insulin and IGF for muscle building. At the time that you don't have to be trained fast carbohydrates to a large extent turned into fats and insulin for fat storage! It is recommended to eat more fruit because fruit is still a good source of fiber, vitamins, and minerals.

The slow carbohydrates you can eat at all times, they increase insulin levels hardly allowing the carbohydrates not in fats are stored. In addition, they provide a long period for the supply of sugars from the intestine causing a feeling of hunger. Slow carbohydrates can be found in: grains, beans, brown bread, raw vegetables, vegetables, rice, potatoes, pasta, etc. carbohydrates are in the body uses as fuel with a yield of 4 kcal per gram.