Stand with feet much wider than shoulder-width apart. Shift your weight to one side, bending that knee and lowering into a squat, keeping the other leg straight and foot flexed.
Stand with feet wider than shoulder-width apart, toes pointed outwards. Lower into a squat, keeping your back straight and chest up. Pulse up and down slightly.
Lie on your side with a resistance band looped around your ankles. Keep your bottom leg straight. Lift your top leg up against the resistance of the band.