In tennis and baseball, it's all about the swing. Will tennis champ Sloane Stephens and MLB star Justin Turner be able to nail theirs in a different sport?
Gold medalist Kerri Walsh-Jennings takes golfer Michelle Wie through drills designed for extending a career. Michelle shows how to literally train one's vision and focus.
NFL running back Melvin Gordon's beach conditioning puts boxer Deontay Wilder through the paces. Later, Wilder's ring workout pushes Gordon to the limit.