Hit the mat with a pal -- Have a partner hold on to your feet for five minutes of crunches (42 calories). Then do side-by-side mountain climbers for four minutes (34 calories). Cap it off with three minutes of jumping jacks (26 calories).
Hit the mat with a pal -- Have a partner hold on to your feet for five minutes of crunches (42 calories). Then do side-by-side mountain climbers for four minutes (34 calories). Cap it off with three minutes of jumping jacks (26 calories).