Sit down and place your feet roughly shoulder width apart and parallel against the middle of the platform. Then adjust the depth of the seat until your knees are bent at approximately 45 degrees.

Push through your heels, pressing your legs to a point before your legs are fully extended, then slowly retract your legs to just before the starting point to avoid clashing the weights. Conduct each repetition at a controlled speed when extending and retracting your legs. Ensure that your knees bend up in line with the angle of your feet. When you've completed your final repetition gently lower yourself down until the weights are caught.

Avoid having your knees bend inwards past your big toes and dont fully lock out your legs.