: Some days you jump 50 times in 37 seconds on a 20 inch box. Other days you jump 2 times on a 12 inch box, miss the step, bust your ass and bust through walls 🙋🏻 And some days the latter happens when demonstrating an exercise for a class. Only 6 people saw me though so it's all good. 🙈 Oh and I had put back half of the vent pieces before I took the video. 😳 #superstar 🤘🏼 #marycatherinegallagher 🤘🏼 #fail #ouch