I'm Tiffany Anderson. And I want to share with you how to do an upside-down sit-up. So, first you want to find a park or gym, where you have a bar that you can hang off, of. You'll be hanging by your knees, which will be an unusual feeling. And also being upside-down, most of us don't hang with our head upside-down. So, this is phase one, you must practice acclimating your body to being upside-down. Phase tow would be finding a place where you have two bars to hang from. One to hit your feet and the other one under your knee. Go ahead and hang upside-down, so that your head is upside-down and touch the floor. The floor is there, in case you need to flip off, or if you start to feel sick or nauseous. Go ahead and pull up and practice your upside-down sit-up. Phase three, you want to find pull-up bars that you can slip your feet under and put your knees over and hang without touching the ground. At this point, you're ready to do the full upside-down sit up. Pull your core tight, pull your glutes tight, hands come to chest. And go ahead and sit up.