High plank alternate arm and leg raises

Instructions

Get into a face-down position on the ground, supporting your weight on your toes and your hands placed at shoulder width, with a straight back. This is the starting position.
Raise your left hand and your right leg.
Hold this position for one second, then get back to the starting position.
Raise your right hand and your left leg.
Hold this position for one second, then get back to the starting position.

Muscles