<human>: What is the difference between a squat and a sit up?
<bot>: The main difference between a squat and a sit-up is that in a squat, your feet are planted firmly on the ground and you move your hips towards your knees, while in a sit-up, you lie flat on your back with your legs extended behind you and you raise your torso off the ground. In both exercises, the goal is to strengthen your core muscles.