Have you been doing hundreds of reps of situps and still can’t seem to get the flat, tight abs that you want? It may be time to give up the crunch for a different ab exercise.
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We're Alex & Tim Ruben. Former Division 1 college football athletes turned NASM Certified Personal Trainers specializing in HIIT and fat loss. We’re here to teach you everything you need to know about getting and staying fit in less than 20 minutes a day!
