<iframe src="https://player.vimeo.com/video/271793153?background=1" width="640" height="360" frameborder="0" allowfullscreen></iframe>
Start on the ground on your elbows and toes in a plank position. Roll onto one elbow while reaching the other arm to the ceiling, keeping your core and side tight. Then roll back to plank and repeat on the other side. Continue alternating sides for each rep.