The main difference between sit ... crunch adds an extra level to the traditional crunch by targeting the upper and lower abs. Lie flat on your back. Lift your arms and legs, so they are extended ...

Standing ab workouts normally involve more of a full-body workout than lying down, as you have to engage your leg muscles ... I swapped my sit-ups for a standing oblique crunch.

Perform each move for 50 seconds, taking just 10 seconds of rest between each one. Complete all the moves, and then you're ...

As much as I love a good set of crunches and sit-ups ... Your arms and legs will also get a workout during this routine, as well as your mid-section. The workout is made up of ten different ...