My 16 year old son will be a junior in high school next year and has been approached by his varsity coach and been told he has the lead for the starting wide receiver position next year. His team finished 11-1 losing to the eventual state champs. He is 5'10" and weighs about 155 lbs. He has been hitting the weights pretty hard since the season ended. What can I let him take to supplement him, protein, creatine, ???? I want to make sure he has what he needs to get some more strength and good lean muscle as well. Any advice will be greatly appreciated.