This superset workout from Niki, known as SugarySixPack, uses two 25-pound dumbbells (or dumbbells of your choice) and a chair that's sturdy enough for step-ups. You'll also be doing Bulgarian split squats as well as what she calls "single sit squats" and more. Note: she demonstrates the moves with a single dumbbell but says you'll need two. Do each superset for three rounds before moving to the next. Reps range from 10 to 15.