Stand up straight with a chair positioned behind you.
Take a small step away from the chair.
Transfer your weight onto the leg you would like to exercise, lifting your other leg in front of you a little.
Focus your gaze directly ahead, activate your abdominal muscles, and keep your back straight.
Bend your knee and push your hips back behind you, aiming to sit down on the chair.
Ensure you keep your knee pointing directly ahead.
Do not allow it to drop inwards.
Your back should remain straight with your gaze in front.
Once sat on the chair, lower your elevated leg to the floor, and stand up using both legs.
Repeat this movement.