Put your feet on the wall and stand on your hands. This is the starting position.
2. Flex your elbows and go down with control. Pause for a moment and extend your arms back to the starting position.
Note: This is one of the most difficult bodyweight exercises. If you are unable to perform it, just hold your bodyweight in the starting position for as long as you can.
Or you can do the easier variation “Vertical pushups”. you will find its video in “Information”.