Drop down into an RDL position with dumbbells in your hands. Look down and round your upper back. Keep your elbows straight and pull your shoulder blades down your back as you lift your arms and head. Try to get your arms high enough so they are in a straight line with your torso. Hold in the top for a second then roll it back down. Try to get your hands about half way down your shins, I was cutting these a little high.
3-6x15-30 or 100-200 total