Lie on your back and place a stability ball behind your knees.
Secure it with the backs of your legs and your feet.
Lift your knees towards your chest and then return to the starting position.
Abdo ABS - Knee Lift
Lie on your back and place a stability ball behind your knees.
Secure it with the backs of your legs and your feet.
Lift your knees towards your chest and then return to the starting position.
