The Best 21 Minute Leg Workout! Short on time? This 21 minute workout is the perfect lower body, fat burning circuit! Read More Strength Workouts, Beginner Workout, Lower Body Workouts, 21 minute, WorkoutsCindy DuVallDecember 12, 201721 minute workout, workout, workouts, calorie burning, fat burn, strength training, resistance, dumbbells, legs, lower body, glutes, hamstring, quads, one legged, single side, timed, build muscle, leanComment