Crunches have long been the go-to exercise for a post-workout ab finisher. Not only are they simple to execute, but you can't deny the burn that comes after just a few reps. Still, as fatigue sets in, ...
14don MSN
Instructors swear by this 2-minute Pilates double toe tap—I tried it for a week and, wow, my abs
Up the ante on your ab work.
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