Muscles worked: quadriceps, hamstring, glutes, inner & outer thighs
Form: To perform the side lunge, begin standing with your feet together. Slowly take a large step sideways with your right leg. Keeping your left leg straight, your right knee bends in line with your ankle. Hold for 2-3 seconds. Push off your right leg bringing it back together with the left. Repeat on the left side. Keep your transverse abdominis activates, ribs to hips, and clasp your hands together to keep your shoulders back.
Note: You can also add resistance to this exercise by holding a medicine ball.