How to do the Leg Press

Sit firmly in the leg press machine, ensuring your back is supported well.
Position your feet shoulder-width apart on the footplate, toes slightly outward.
Slowly lower the platform by bending your knees; don't roll your hips back.
Push the platform back up, straightening your legs almost completely.
Stop short of full knee extension so your muscles keep the load.

Full technique — 6 steps

Sit in the machine with hips and lower back fully supported against the pad.
Place your feet about shoulder width on the platform with toes turned slightly out.
Unlock the safeties and hold the handles while keeping your knees pointing the same way as your feet.
Lower the platform by bending your knees until your thighs approach your torso without your pelvis rolling back.
Press the platform away through your whole foot, especially the heel, until your legs are nearly straight.
Stop short of full knee extension, then begin the next rep from a stable top position.