Start in a plank position, holding a five-pound dumbbell in your right hand (A). Leading with your elbow, lift the dumbbell up to your side (B), then extend your arm out straight behind you (C). Reverse the movement to return to the starting position. That’s one rep.
“I’d recommend doing one for core — a combo of plank, side plank, oblique crunches, and mountain climbers. Then, always balance it out with moves that target the lower half, like the sumo lunge, platypus walk, single leg dead lift, and reverse crossover lunge.”