This squat variation focuses the work on the inner thighs as you straighten your legs. You might even feel a bit of stretch at the bottom of the squat.
Stand with your feet wide, toes pointing out. Bend your knees, lowering your hips deeply, so your thighs are parallel with the floor. Make sure to keep your weight back in your heels.
Then rise back up, straightening the legs completely and squeezing the glutes at the top of the movement to get the most from the exercise.