• Chadiha: Radical training methods • Syken: Vikings' Jailhouse workout • Chadiha: Chef serves up Lions' fare • Video: The Tiki Barber workout • Photo Gallery: McNabb's agility drills • Photo Gallery: NFL's toughest workouts • Workout: Tiki Barber • Workout: Donovin Darius • Workout: Donald Driver • Workout: Walter Jones
	Fred Vuich/SI

NFL players are turning to increasingly radical offseason training methods to help them get ready for the rigors of the regular season. For a special report that appears in the Aug. 8 issue of Sports Illustrated and here on SI.com with additional photos, videos and stories staff writer Jeffri Chadiha and writer-reporter Bill Syken spent time with five NFL veterans, learning the unique ways each prepares for camp.

Jaguars strong safety Donovin Darius' three-and-a-half-hour daily session combines weight training with track exercises, yoga and kick-boxing. Seahawks left tackle Walter Jones spent his offseason pushing his brother-in-law's Escalade twice a week. Giants running back Tiki Barber has gained 18 pounds of muscle thanks to a heavy-lifting routine. And Eagles quarterback Donovan McNabb's grueling two-week session in the desert includes playing tag. 

To see Darius' complete five-day workout, plus the regimens of Jones, Barber, McNabb and Donald Driver -- as well as details of how cutting-edge trainer Kurtis Shultz whips the Vikings into shape and how Lions nutritionist Mark Skamiera gets his players' weights up (or down) -- click on the the menu above.