You Can't Say 'I Don't Have Time To Exercise' Ever Again. This Science-Based Life Hack Takes Just 7 MINUTES
March 13, 2014
If you love a good life hack how about one that saves you HOURS at the gym?
In 12 exercises deploying only body weight, a chair and a wall, it fulfills the latest mandates for high-intensity effort, which essentially combines a long run and a visit to the weight room into about seven minutes of steady discomfort — all of it based on science.
"There's very good evidence" that high-intensity interval training provides "many of the fitness benefits of prolonged endurance training but in much less time," says Chris Jordan, the director of exercise physiology at the Human Performance Institute in Orlando, Florida.
Work by scientists at McMaster University in Hamilton, Ontario, and other institutions shows, for instance, that even a few minutes of training at an intensity approaching your maximum capacity produces molecular changes within muscles comparable to those of several hours of running or bike riding.
Interval training, though, requires intervals; the extremely intense activity must be intermingled with brief periods of recovery. In the program outlined by Mr. Jordan and his colleagues, this recovery is provided in part by a 10-second rest between exercises. But even more, he says, it's accomplished by alternating an exercise that emphasizes the large muscles in the upper body with those in the lower body. During the intermezzo, the unexercised muscles have a moment to, metaphorically, catch their breath, which makes the order of the exercises important.
The exercises should be performed in rapid succession, allowing 30 seconds for each, while, throughout, the intensity hovers at about an 8 on a discomfort scale of 1 to 10, Mr. Jordan says. Those seven minutes should be, in a word, unpleasant. To help track your progress, consider investing in a quality fitness tracker.
The upside is, after seven minutes, you're done.
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