Hey. My name is Erin and I'm a former U.S. Junior Olympic certified swim coach and personal trainer and fitness is my passion so I cannot wait to share it with you guys. All right, on to the floor where most of the magic happens. One of my other favorite exercises is the Russian twist. Now a modification if you are new to this, not so strong, just keep your heels on the floor. Lean back slightly. If you are a more advanced exerciser, you can bring your legs up and cross them. But I'm going to show you the modified version for now. Take your medicine ball, lean back. You should already feel the contraction in the abs. And then you are just going to tap the ball side to side. If you're feeling adventurous bring the legs up for a greater burn. And I like to do 3 sets of 30 to 40 of those. They're pretty quick but you should feel a nice burn.