This exercise works your glutes, quadriceps and hamstrings. You can perform it any where and you can use weights for more definition.
Start by standing with your feet next to each other, hip width apart. Take a big step back with your right foot and lower your right leg but do not let the knee touch the floor. Keep your chest lifted, back straight and start going up and down on the same leg making sure that the knee on your front leg does not go over your toes. Do 3-4 sets 16-20 reps on each leg.