Possibly one of the worst things u can eat as an athlete that is trying to refuel their bodies. First and foremost is a solid protein source such as Turkey, Grass fed red meat, chicken, moderate amounts of sea food, and if no good protein there is always a protein shake with whey protein isolate. Next u should have a complex carb such as sweet potatoes or yams. Maybe some organic fruit added in with some high grade organic veges. Broccoli, brussel sprouts, carrots, etc. Dont forget after an hour after food or more start drinking some water with Celtic sea salt or Himalayan sea salt mixed in the water for proper hydration. Now the mixture of all this depends totally on the individual and what their training goals are as in more muscle or less, Stronger, or faster or whatever they decide will help that kid get better and improve his weaknesses.