9. STABILITY BALL KNEES BENT
Unlike a crunch, which puts unnecessary and unwanted stress on the spine, this exercise makes both your abs and your trunk work safely, as you work on an unstable surface.
How do I do that?
With your knees placed in the center of the stability ball and your hands firmly on the floor, walk your body to a position on board to align your buttocks, shoulders, and head.
Imagine that a stick rests on your spine; it must be in contact with these three regions.
Engage your abs and hip flexors to move your knees forward.
As they move towards your chest, your spine flexes, activating your abs.
Hold the position folded for a second or two, then slowly return, to begin with.
He’s a rep.
Do 10 to 15 repetitions. Go to the next page to find out more