Challenge your entire core (and more!) with this total-body exercise that's great for building core and shoulder stability.
How to do it: Start in an elbow plank position, with the bell just behind your right elbow. Step one hand in at a time to press up into full pushup position. Reach your right hand under, grab the bell, and drag it to the other side. Lower back down into modified plank one arm at a time. That's one rep. Complete 12 reps, alternating sides each time (6 reps per side).