Proteins

Proteins are very important to our body because most of the things in our body need proteins. Without proteins our body would not function properly. Proteins helps growth, build/repair muscles, strengthens your body's immunity, makes hormones and enzymes, and is also a energy source, which is why it is very important for teenage athletes. We need our proteins to grow up fit and healthy! The recommended consumption of proteins is 10%-35%. We can take in proteins from meat, fish, milk, cheese, nuts, vegetables, and other foods.

http://www.mckinley.illinois.edu/Handouts/macronutrients.htm
http://www.bcm.edu/cnrc/consumer/archives/percentDV.htm