Adam Booth, Haye's trainer and manager, indicated he would not fight beyond October 2011.

BBC: David Haye stops Audley Harrison to retain WBA title

Haye, 29, said that trainer and manager Adam Booth would enter negotiations with the Ukrainians later this week.

BBC: David Haye set to start talks with Klitschko brothers

Gravity takes over when you perform most exercises, like a dumbbell curl or a kettle bell swing, giving the body a chance to relax, says Rowdy Yates, a certified personal trainer and fitness manager at Crunch gym in New York City.

WSJ: What's Your Workout: From a Ball and Basket to a Stick and Some Ice