The Split-Squat Curl exercise works your biceps, core, butt and legs.
Place your back foot on a bench or a chair. Stand far enough away from the bench so that when you bend your front knee, your knee does not go over your toes. Bend your standing knee and crawl the weights to your chest. Rise up slowly. Do 8 to 10 reps, switch sides and repeat. Do 3 sets total.