Box squat with chair ("Hip hinge, box squat" Posterior chain strengthening, arms forward)

Put the chair behind you and take a very wide step.
Push your hips back behind you, as you try and sit down into the chair.
Counterbalance this by leaning your chest forwards, keeping your back straight.
Elevate your heels when you’re sitting down.
Stand up, ensuring your knees travel forwards over your toes the whole time.