Paramedics and track staff add padding to the poles that slider Nodar Kumaritashvili crashed into ahead of the 2010 Winter Games. Elise Amendola/AP hide caption

itoggle caption Elise Amendola/AP

Chicago Bears quarterback Jay Cutler stands on the sideline in the third quarter after leaving the game with an injury against the Green Bay Packers on Sunday. His decision to sit out of the remainder of the game, which Chicago lost, made Cutler the target of critical Tweets from his peers in the National Football League. Jonathan Daniel/Getty Images hide caption

itoggle caption Jonathan Daniel/Getty Images

Fitness pioneer Jack LaLanne, seen in this undated photo, was inspiring TV viewers nationwide to trim down and pump iron long before exercise became a national obsession. AP hide caption

itoggle caption AP

LeBron James of the Miami Heat looks on during Wednesday's game against the Detroit Pistons in Miami. Mike Ehrmann/Getty Images hide caption

itoggle caption Mike Ehrmann/Getty Images