I have used this drill for years but only recently came across it on another video, and I was disappointed with the demonstration. There was a lot of controversy in the comments debating whether it was beneficial due to the arched shape it created and the fact that the shoulders did not lean over. I have not had this problem with THE MAJORITY of my gymnasts who use this drill. If you start in the proper position and use a tall enough mat to start out with, it is very possible to perform this drill in a way that is EXTREMELY beneficial. I hope you enjoy! If you do, please Comment, Like, Share, and especially, SUBSCRIBE! :-)