Squats are one of the best lower body exercises you can do. Why? One reason is that squats are multi-joint exercises which target all the muscles of the hips, glutes and thighs. The chair squat which requires no weights or equipment (other than a chair) is great for beginners, for anyone with knee problems or for those who are overweight and need a bit more support. It's also great for anyone wanting to add more functionality into their lives because it mimics the movements we do each time we sit down or stand up.