Instructions
Seat yourself comfortably on a solid chair, with your back straight and unsupported. Keep your feet planted together on the ground, with your arms hanging loosely by your sides. This is the starting position
When ready, raise both arms out and up in a smooth arc until your hands meet above your head. At the same time, extend your legs out and away from each other, pointing your toes upwards as you do so
Bring your arms back down and legs back in by reversing the exact motion to complete one rep