Set-up: Begin in the standard push-up position with arms straight at shoulder width and your core tight. Make sure that your hips, ankles and shoulders form a straight line.
Movement: Now, while bracing your core to maintain stability, raise one hand slightly off the ground and gently place it on top of your other hand. Return the hand to its start position and repeat with the other hand. Focus on controlling the movement in your shoulder blades without torquing or twisting your lower back.
Repetitions: When both hands have been shuffled, this counts as one repetition.