Get Fit: Bowflex 20-Minute Workout for Women
Printable Strength-Training Workout Under 20 Minutes
Never get bored! A Tabata Workout For Almost Every Day of the Week... 20 minutes of high intensity promising great results. My kind of workout!
The Scientific 7-Minute Workout - NYTimes.com 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. Those seven minutes should be, in a word, unpleasant. The upside is, after seven minutes, you’re done.