Stand up straight with your arms raised in front of you and your elbows bent to 90 degrees.
When ready, bend your knees as you sink your buttocks backward into a squat position.
Push through the heels of your feet and straighten your knees.
Upon reaching the top of the squat, simultaneously lift one knee and lower your opposite elbow until they meet.
Return to the start position and repeat, leading with your other leg and elbow.