Power Plank is the most incredible fitness machine that utilizes reverse crunch technology to give you a well-toned & sculpted stomach and Ab's. Perfect for both Men and Women! Get in shape the easy way with the Power Plank Abdominal Trainer. Just spend five minutes a day and you'll simply be surprised to see the weight loss results. Your daily workouts will greatly improve by performing reverse crunches with the abdominal exercise machine to gain rock hard abs, buns, and thighs. Perfect for both men and women.