Lie on your back and lift one leg straight up, holding for a few seconds before lowering it down. Repeat with the other leg.
Stand with your back against a wall, slide down into a squatting position, and hold for a few seconds before standing back up.
Sit on the edge of a chair with your heel on the floor and extend one leg in front of you.
Stand with your feet shoulder-width apart and rise up onto your toes, then lower back down. You can hold onto a sturdy surface for balance if needed.
Sit with your legs straight out in front of you. Tighten the muscles on the front of your thigh and hold for a few seconds before releasing.
Lie on your back with your knees bent. Slowly slide one heel towards your buttocks, then slide it back out. Repeat with the other leg.
Find a sturdy step or platform. Step one foot onto the step, then bring the other foot up, and step back down. Repeat, alternating the leading foot.
Lie on your side with your legs straight. Lift the top leg up and hold for a few seconds before lowering it back down. Repeat on the other side.