Dead Bug

Instructions

1. 
   Lie faceup on the floor, knees bent 90 degrees and directly above hips, and arms extended above shoulders, palms facing forward. Exhale to flatten your back into the floor while squeezing your glutes and drawing in abs.
2. 
   Extend left leg toward the floor without lowering it all the way; at the same time, bring your right arm behind your head, palm facing ceiling. Try not to arch your back off the floor. Return to starting position and repeat for set; switch sides.