Nutrition is one of the four pillars of an effective fitness program; the others are exercise, recovery, and consistency. While a lack in any one of these areas can literally make or break your efforts, many SEALs and other competitive athletes say that their diets contribute at least 50% to their success. What, how much, and when to eat can be very confusing, due in some part to the fact that everyone’s body responds differently to training, diet, and supplements. Here are some general rules to go by:
Eat smaller meals throughout the day. SEALs and competitive athletes alike need to provide their bodies with enough fuel to train and perform at top levels. With the exception of missions, SEALs usually plan to eat 4 to 5 meals a day. This practice optimizes effort by maintaining a constant blood sugar level, avoiding the energy roller coaster.
Plan your meals and mealtimes using the 1, 2, 3 rule. The 1, 2, 3 rule refers to the ratios between fat, protein, and carbohydrates. This helps you determine “what” you eat. “When” you eat is another important factor. Protein right after PT, for example, optimizes the effectiveness of the training because it is the building material for hungry muscles.
http://www.navyseals.com/nutrition