The 4-Hour Body - An Uncommon Guide to Rapid Fat-Loss, Incredible Sex, and Becoming Superhuman - Timothy Ferriss
tears during the foot-strike portion of sprinting, when the load is greatest. The Asshole
demonstrates proper form here:
www.fourhourbody.com/asshole-demo.
According to Joe, athletes who can perform strict natural glute-ham raises rarely pull
hamstrings. If you don't have the equipment, a partner can hold your ankles for this movement,
which is much harder than it looks. Start slow and keep your hands in front of your face to
avoid plastering it on the oor. See the Sorinex machine, which I have at home, in the "Tools
and Tricks."
2. Focus on hip extension strength. Forget leg curls and knee exion, with the one exception
of the glute-ham raise. Otherwise, you should focus on strong hip extension. To prevent
pulls and increase sprint speed, focus on these movements:
Reverse hyperextensions (reverse "hypers")
Reverse hyperextensions (reverse "hypers")
Regular hyperextensions
Kettlebell or dumbbell swings
annaabi.ee 
