


"Instead of going for 45 to 60 minutes, you'll be done in 30 or less-but they'll be the toughest 30 minutes you've ever done." The key to the program's effectiveness is a Tabata-style high-intensity interval training (HIIT) protocol involving short periods of lung-busting work alternated with even shorter periods of rest. "I took the same exercise volume I had in the original Insanity program and condensed it," he says. "There's only one word to describe it: insane," says trainer Shaun T, who designed the workout based on the principles of his new fitness DVD, Insanity Max: 30. Repeated exposure can result in rapid fat loss, accelerated muscle growth, and a daily workout obsession. Warning: The following workout may cause extreme sweating, uncontrollable grunting, and intense muscle burn.
