This drill is called prone plank with arm extension. This is a great drill to develop a little bit of core stability. It is somewhat challenging. What we’ve done, though, is we’re going to add a little bit of arm extension as well to help on some extension throughout that midback. So, Bree is simply going to get up into a plank position on her toes and forearms. Real tight, stable. We want her very neutral, like a board. Holding this position really stable. She’s going to reach as far as she can out with the right arm and back, left arm and back. There’s going to be a little shift, but before she moves, she wants to do a good job to really stabilize the core back and forth. 10 to 12 reps will be good. This is called prone plank with arm extension. A great drill to develop core stability and also develop a little bit of thoracic extension as well.