Before last season, the Giants started using heart-rate monitors to assess which drills pushed players to maximum exertion. Now they're strapping GPS devices on everyone from Eli Manning to Osi Umenyiora, according to the New York Times. Employing GPS technology allows the Giants to track distances run by players during workouts. "I'm looking into the future," Ronnie Barnes, the team's vice president for medical services, said. "We've known we need to do this, and I feel like we've begun to pioneer a little bit with our players and within the league."