Kneeling on a padded surface (such as a bench or a box) with a decent amount of height. Slowly tip forward, reach down and place both hands on the floor. You should now be in an inverted V position, but with your knees and feet still resting securely on the top of the box. This is your start position. Maintaining a braced core and neutral spine, lift your left hand on the floor and reach across to tap your right shoulder. Return the left hand back to the floor and repeat the same movement with your right hand. Perform this alternating movement for the required number of reps (or time).