Handstand Push Up

Stand yourself up against a wall, bend forward with both hands on the floor, about shoulder width apart.

Use the wall to propel yourself upward while keeping your arms straightened. At this point your body should be upside down and fully extended.

Bring your body downward slowly, to the point of the top of your head grazing the floor.

Return to the original position by slowly pushing yourself back up and locking your elbows into place.