Exercise execution guide
Get yourself into the standard push up position. Feet together, palms on the floor (shoulder width apart). Brace your abs and maintain a straight back.
Slowly lower your right arm until the forearm is flat on the ground, then bring down your left arm. Once both forearms are on the ground, immediately raise your right arm back to a push up position followed by your left. This should all be done in one smooth movement, so that you are constantly in motion.