Primary Muscle Group: Full Body
Muscle Groups Worked in This Exercise: Full Body
Preparation: Lie on your back on the floor with both your arms and legs fully extended. Arms should be all the way extended above your head.
Breathing: Breath out on the contraction of the muscle and breath back in on the way back to the start position.
Execution: Begin the exercise movement by bringing one knee at a time together with both of your hands, while driving the knee towards your chin in a curled position. Move back to the start position and repeat with opposite leg.