
Also works: Calves · Glutes · Hamstrings
You sit braced against a pad and press a loaded sled away with both feet, so the spine carries none of the load. That is the whole trade: the leg press moves more absolute weight than any squat variation while removing the bracing demand, which makes it the best tool for adding leg volume when your lower back has already had enough.
Set up first, then execute. Every cue below is something you can check on your next set.
Breathing & tempo — Inhale as the sled comes down, exhale on the drive. Two seconds down, no pause at the bottom, one second up, and never hold the breath through more than a single rep.
Where to start, and what to change when it stops being hard.
Start with the empty sled — on most 45-degree machines that is already 20-45 kg — and add a plate a side at a time while checking your tailbone stays down. Bodyweight per side for 10 clean full-range reps is a reasonable intermediate marker. Add load only when the range has not shrunk; if the depth is creeping up, add reps instead.
The errors that show up most often, and the cue that fixes each one.
Raise the safety stops or shorten the range until your tailbone stays flat. Where your pelvis leaves the pad is your bottom position, and no amount of hip mobility work changes that on the day.
Stop about 10 degrees short and turn around. Think 'legs long, knees soft' — you should feel the quads stay loaded for the entire set.
Halve the weight and press to a genuine 90 degrees or deeper. Log the depth alongside the load so a shortened range shows up as what it is.
Keep your hands on the side handles for the whole set. If a rep needs your arms, it was the last rep — rack it on the safeties.
The seat does the stabilising for you. In a squat, the limit is usually your trunk and your ability to hold position under the bar; in a leg press the backrest takes that job, so the quads, glutes and adductors work until they genuinely fail. Most people press 1.5-2x what they squat for the same reps, and that difference is the seat, not their legs.
Foot placement changes the job more than on any other machine. High and wide on the platform lengthens the hip lever and shifts work to the glutes, adductors and hamstrings; low and narrow shortens it and drives the quads, at the cost of more knee travel. Neither is wrong — pick one per block and keep it constant so you can read your logbook.
Second on a leg day, after a squat or a hinge, for 3-4 sets of 8-15. It is also the sensible main leg movement on weeks when your back is sore, when you train alone with no rack, or late in a program when spinal fatigue is the thing limiting your squat. Do not pair heavy leg pressing with heavy squatting in the same session more than once a week — the knees pick up the tab.
No kit, too hard, or too easy — here's where to go instead.
For building the quads and glutes, close. For everything else the squat gives you — bracing, balance, carryover to lifting things off the floor — no. Treat the leg press as a leg-building tool, not a squat replacement, unless a back problem or a missing rack forces the issue.
Yes, and it is one of the better calf setups in the gym. Slide your feet down until only the balls are on the platform, keep the knees almost straight, and push the sled away with the ankles alone through the biggest range you can get. Do them after your pressing, 3-4 sets of 12-20 with a pause at the top and a slow stretch at the bottom. Keep the safeties engaged — the range is short and you do not want the sled riding down onto locked knees.
Mid-platform and shoulder-width for general leg work. Go higher and wider if you want more glute and hamstring and less knee travel; go lower and narrower for a quad emphasis, accepting that your heels will want to lift. Pick one placement and hold it for a whole training block.
Until your thighs are close to your chest and not one centimetre past the point where your tailbone lifts off the pad. That point is different for everyone and it moves depending on your seat angle. Find it with a light sled on your first set, and set the safeties to it.