Ryan Flaherty trains professional athletes like track and field Olympians; NFL athletes like Marcus Mariota and all of the Arizona Cardinals, and others like Serena Williams. He gets flown all over the world to train people how to get fast and to reduce sports injuries. He uses tools and methods proven by research (much of it his own) to dramatically - not incrementally - increase speed. The tools and methods are deceptively simple (there is one single lift that anyone can do, in the right way, using a piece of equipment found in almost any gym, that will make you faster). In fact, he can reliably predict people's 40 times after measuring the amount of force they're able to put into their strides. So, it's a myth that speed can't be coached. He's now employed by Nike.