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Best workout EVER for abs.
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Jillian Michaels: Standing Abs! I looove standing abs! Penguin taps - 20 reps; Standing oblique crunch - 20 reps each side; Pike crunch - 20 reps each side; High knees - 30 seconds...Do 3 sets right in a row for killer standing abs!!
Model Ab Workout
Healthy, fit lifestyle
The Best 15-Minute Workouts for 2015 http://www.womenshealthmag.com/fitness/15-minute-workouts-2015
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15-Minute Belly Blasting Workout
Health & Fitness
flat belly workout