Depending on his goals, he just needs to make sure that he takes in all the essential nutrient for health and fitness. These include an adequate amount of vitamins, essential fats, complex carbs, and enough protein. For example:
Breakfast:
2 eggs
1 piece of whole wheat toast with natural peanut butter
1 cup of oatmeal or whole bran cereal
Snack:
Trail mix w/ almonds
Apple
Lunch:
Turkey or tuna sandwhich on whole wheat
Baby Carrots
Wheat crackers
Snack:
Banana/Whey Protein Shake
Dinner:
Chicken/fish/steak
Brown Rice
Veggies
Snack:
1 cup of skim milk w/ 1 tsp of cocoa powder
Workout: 3 Days/week, 8 - 12 reps, 1 - 2 min rest between sets