Save17Favorite1 This Tabata workout is a fitness cram session! In 30 minutes, you work your entire body and then some. To make the workout even more efficient, we borrow a trick from Chicago-based trainer Lauren Fairbanks and turn the rest period into isometric exercises, which she lovingly calls “frest” for fake rest. Holding these positions works the muscles in a complementary way after the intensity of interval work.
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