Abdominal Crunch Machine

The machine crunch is a machine-based exercise targeting the abdominal muscles. It involves sitting upright in the machine and curling the torso down toward the chest against some pre-set level of resistance. On some machines, the knees also curl up torward the torso.Besides the aesthetics, they're an important muscle group for function. The Ab Crunch machine trains the abs as well as another pair of important muscles. However, performing this exercise requires attention to detail. There's a small difference between proper execution and lower back strain with the ab crunch.Total Crunch uses a compound movement system that exercises all your muscles at the same time. It combines four kinds of strength exercises (leg press, squats, back and abs) with cardiovascular aerobic exercise, which makes it a complete, effective training system for burning calories and toning your body.