20.

What is the role of various elements of diet on performance of an athlete .

 Eating a balanced diet means choosing a wide variety of foods and drinks from all the food groups. It also means eating certain things in moderation, namely saturated fat, trans fat, cholesterol, refined sugar, salt and alcohol. The goal is to take in nutrients you need for health at the recommended levels.

1. Most of the energy used by the body is provided by the carbohydrate and the fats.
2. Proteins build the body and perform the function of repair of damage tissues.
3. Minerals an’d vitamins regulate the functions of the body; they are needed for important chemical reactions taking place in the body.
4. Water is present in all tissues of the body and plays an important role in various life processes. For example, digestion, excretion and transport of important materials within the body. It also helps in cellular reactions.