Fabulous Signature with a plethora of modifications and options as needed. A brief planks segment that I am trying to lean into as this is a strength I am still developing. M/BODY is helpful as the hard parts are hard but you have support. Marnie even says during pushups here "we don't want things to be easy, we want them to be right. We want them to be strong..." 

20 minutes that will NOT waste your time - not a cardio bursting class but a wiggly, sweaty, and challenging (not from complexity but from focusing in on the balance and the movement). Playground balls work well, but the M/ovement ball is more grippy and a helpful tool! Favoriting for when I need a shorter length class and to sweat but don't feel bouncy and jumpy.