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Machine · Quads

Leg Press: Loading Your Legs Without Loading Your Spine

The leg press lets you push serious weight with your lower back fully supported — but foot placement and depth still matter.

· 2 min read

Leg Press demonstration

The leg press takes your spine out of the equation entirely, which is exactly why it can handle heavier loads than a squat — but that same supported position makes it easy to load your knees badly if your foot placement is off.

How to do it

  1. 1Set your feet shoulder-width — mid-to-high on the platform, toes very slightly turned out.
  2. 2Release the safety bars — once your legs are ready to take the full load, not before.
  3. 3Lower with control — bend your knees toward your chest until you reach a comfortable depth, without your lower back lifting off the pad.
  4. 4Stop before your hips tuck — letting your hips round off the seat at the bottom shifts load onto your spine — stop just short of that.
  5. 5Press through your whole foot — drive back up without locking your knees out hard at the top.

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Sets and reps

3–4 sets of 8–12 reps, choosing a depth you can control without your lower back lifting off the pad.

Common mistakes

  • Letting the lower back round. If your hips tuck under and your lower back lifts off the pad at the bottom, you've gone past a safe depth for that weight — reduce the range or the load.
  • Locking the knees out hard. Slamming the knees straight at the top of each rep transfers stress to the joint instead of the muscle. Stop just short of full lockout.
  • Feet too low on the platform. Low foot placement shifts stress onto the knees and reduces glute and hamstring involvement. Move your feet up for a more balanced load.

Safety note

Never fully lock your knees under load and hold there — a small bend keeps tension on the muscle instead of the joint.

This machine can handle real weight because your spine isn't involved — just keep your foot placement and depth consistent so your knees stay the only joint doing the extra work.

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