Intense Interval Training Works Wonders On The Body – In Seven Minutes

An article by Canadian researchers in a health fitness journal describes an intense – but very short, fairly easy and scientifically sound – exercise program that produces beneficial molecular changes in muscles comparable to those induced by hours of running or biking. The 12 familiar exercises – pushups, lunges, jumping jacks, squats, etc. – are performed in intervals: 30 seconds of intense exercise followed by a 10-second rest, followed by 30 seconds of exercise, and so on. Exercises alternately target upper body and lower body muscles, allowing worked muscles to recuperate. “The upside is, after seven minutes, you’re done,” says New York Times blogger Gretchen Reynolds.