Athletic performance is determined by both training and genetic predispositions, but it is difficult for genetics to add significant value beyond what top-tier athletes already know about their own ca

“my feeling is it's hard to need a stopwatch so I don't think it's hard for genetics to be what Gary already knows about how fast and how strong he is so I've tried hard to find something about genetics that would tell you but you know these athletes know exactly how fast they are”