Carbs may provide most of the energy for your body, but protein provides endurance and helps your body successfully control the output of the energy you gather. Meat is an excellent source of protein, but too much of it can be harmful for the body. An alternate source is eggs. They may be high in cholesterol, but their health benefits more than make up for that, and if you monitor your cholesterol intake throughout the rest of the day, eating up to two eggs daily provides the body with a source of healthy fat and all essential amino acids.