Tim Grover, the fitness specialist used by Michael Jordan and many elite NBA players, shares his philosophy in Relentless. He is describing the three things he asks of every player: "I don't care how much you can lift, how fast you can run, how many pull-ups you can do, or whether you can hit a three while blindfolded. There are only three things I ask of every client... Show up, work hard, and listen. That's it. It requires no talent, no special genetics, or any skill whatsoever to show up, work hard, and listen.”