Squats: Stand with feet shoulder-width apart, lower down into a squat, and then push back up.
Lunges: Step forward with one foot and lower your body until your front knee is bent at a 90-degree angle.
Step-ups: Step onto a bench or box with one foot and then step back down.
Leg press: Sit in a leg press machine and push the weight away from your body with your feet.
Wall sits: Lean against a wall and lower your body until your thighs are parallel to the ground.
Bulgarian split squats: Stand with one foot behind you on a bench or box and lower your body until your front knee is bent at a 90-degree angle.
Single-leg deadlifts: Stand on one foot and hinge forward at the hips, lowering your body until your torso is parallel to the ground.
Step-downs: Step down from a bench or box with one foot and then step back up.
Cycling: Ride a bike to strengthen your quads and improve cardiovascular health.