The Nordic Hamstring Curl: A Complete Guide From First Rep to Advanced Variations
Also called Nordic Curl, Natural Leg Curl, Hamstring Nordic Eccentric
Quick Intro
The Nordic hamstring curl is a kneeling eccentric exercise performed by anchoring the ankles and lowering the torso toward the floor as slowly as possible using the hamstrings alone to control the descent.
Equipment Needed
None required beyond something or someone to anchor the ankles, such as a partner holding the feet down or the ankles hooked under a sturdy fixed object. A yoga mat is optional for knee comfort.
Why the Nordic Hamstring Curl Matters
The Nordic hamstring curl asks the hamstrings (biceps femoris and semitendinosus) to do something most exercises never ask of them: control a slow lowering of the entire upper body under full tension, with the glutes (gluteus maximus) and calf (gastrocnemius) assisting through the hip and knee.
That slow lowering is the entire training effect. With the ankles anchored and the knees on the floor, the hamstrings are the only thing standing between an upright kneeling position and a face-first fall, and lowering that fall as slowly as possible loads the muscle eccentrically through nearly its full range. Research on hamstring injuries in field sports consistently points to this specific eccentric loading pattern as one of the most effective tools for reducing hamstring strain risk.
The Nordic hamstring curl is a very demanding muscular strength exercise, with muscular endurance and body composition carryover.
When to Do It
The Nordic hamstring curl fits early in a lower body session, while the hamstrings are completely fresh and able to control the descent with full attention. One to two sessions a week is plenty at first, since the eccentric loading here produces real muscle soreness that needs recovery time.
- Any current or recent hamstring strain. This exercise loads the hamstring hard in the exact pattern most strains occur in. Starting only after a strain has fully healed, and building up gradually, matters a great deal here.
- New to the exercise entirely. The eccentric demand is severe enough that even strong, experienced trainees often can only control a small partial range at first. Starting with a shallow range and a spotter or partner assisting the return is the sensible way in.
For anyone in a field sport that involves sprinting, this is one of the more directly protective exercises available without equipment.
Getting Ready
A few minutes of dynamic hamstring work, like controlled leg swings or a few rounds of Hip Hinge, primes the muscle before asking it to control a full eccentric lower.
Lower the torso forward as slowly as the hamstrings allow, catching the fall with the hands only at the very last moment. The eccentric lowering, not the push back up, is where nearly all of the training effect comes from.
Step-by-Step Instructions
1. Starting position. Kneel on a padded surface with the ankles securely anchored, either by a partner’s hands or hooked under a sturdy fixed object, torso upright and hips fully extended.
2. The lower. Lean forward from the knees, keeping the hips extended, and lower the torso toward the floor as slowly as the hamstrings can control.
3. The catch and return. Catch the fall with the hands at the bottom of the range, then use the hands and hamstrings together to push back up to the starting position or simply reset from the floor for a beginner-level rep.
Repeat for the full set, prioritizing a slow, controlled lower on every single rep over completing more reps.
How Many, How Often
| Level | Where you’re at | What to do |
|---|---|---|
| Beginner | New to the movement | 2 to 3 sets of 3 to 5 reps, using a partner or assisted setup, focusing entirely on lowering as slowly as possible before catching with the hands. |
| Intermediate | 6 clean reps with a slow lower come easily | 3 sets of 6 reps, working to extend the range before the hands need to catch the fall. |
| Advanced | 8 or more clean reps with a near-full range come easily | Hold a very light weight at chest height during the descent, since raw rep count adds little once the eccentric control is already strong. |
Letting the torso drop quickly and catching most of the fall with the hands is the easiest way to make the set look complete while training the hamstrings far less, so a slow, controlled lower matters more here than the number of reps finished.
Modifications and Variations
The Nordic hamstring curl connects to two related exercises, both of which need equipment.
The Romanian Deadlift, performed with a barbell or dumbbells, trains the hamstrings with a different emphasis, working the hip hinge pattern under external load rather than an eccentric bodyweight lower. It’s an easier entry point into hamstring strength work for most people.
The Glute Ham Raise, performed on a dedicated machine, trains a very similar movement pattern with equipment support through part of the range. It’s a close alternative for anyone with access to that machine.
Progression path: Hip Hinge → Romanian Deadlift → Nordic Hamstring Curl
Extending the controlled range before the hands need to catch the fall is the main way to add difficulty within this exercise itself.
Common Mistakes to Avoid
Dropping quickly and catching most of the fall with the hands. This is the fault that defeats the exercise’s purpose, since the slow eccentric lower is the entire training stimulus. Lowering as slowly as the hamstrings allow keeps the rep honest.
Letting the hips bend at the same time as the knees. Flexing forward at the hips instead of staying extended and hinging purely at the knee shifts the work away from the hamstrings and toward the lower back. Keeping a straight line from knees to shoulders throughout the lower keeps the target muscle doing the work.
Skipping the anchor and trying to balance the ankles unassisted. Without the ankles secured, the exercise becomes unsafe and unpredictable rather than difficult in a useful way. A firm partner hold or a sturdy fixed anchor point is not optional here.
Doing this exercise on a hard, unpadded floor. The knees bear real pressure throughout the hold. A mat or other padding under the knees prevents unnecessary joint discomfort that has nothing to do with the actual exercise.
After Your Set
A set of Nordic curls tends to leave the hamstrings sore well past the workout itself, often building over the following day or two. A standing hamstring stretch, one heel resting on a low surface with the leg straight, gently lengthens the muscle that just did the heaviest eccentric work of the session. A few slow controlled leg swings afterward help maintain blood flow through the muscle as it starts to recover.
Going Deeper
The Nordic hamstring curl sits apart from most exercises in this guide as a specialized eccentric-strength tool, usually placed early in a lower body session by athletes in sprinting or field sports specifically for its documented role in reducing hamstring strain risk. It pairs naturally with a hip hinge pattern like the Hip Hinge in the same session, since together they cover the hamstrings from a controlled eccentric angle and a hip-hinging one.
What actually caps progress here is the hands taking over the fall earlier and earlier in the range as the set goes on, letting someone finish the rep count while the hamstrings do progressively less of the actual controlling. The fix is treating range as the real measure of progress, not rep count, and only adding reps once the controlled range itself has improved.
A strong, uninjured beginner can expect three reps with an assisted, shallow range within the first two to three weeks, and six reps reaching close to half range unassisted somewhere in the eight to twelve week range, since this is a slow-progressing strength movement.
The slow lowering phase is the whole exercise here, which makes it a clear case of eccentric training. The accentuated eccentric training article describes how emphasizing the lowering phase is used and what the research shows.
How to Know You’re Improving
Four checkpoints mark real progress on the Nordic hamstring curl:
- Three reps with an assisted setup and a slow lower
- Six reps reaching roughly half range before the hands catch the fall
- A single rep reaching close to a 45 degree lean before catching
- A full rep completed with the hamstrings alone, no hand catch required
A rep counts as clean when the hips stay extended throughout, the torso lowers at a controlled, even speed and the hands only engage once the hamstrings can’t control the range any further. The angle reached before the hands catch, not the number of reps, is what actually signals real hamstring strength here.
Muscles Worked
- Biceps Femoris (the outer hamstring at the back of the thigh, lengthening under load to slow the fall)
- Semitendinosus (the inner hamstring at the back of the thigh, sharing that braking work as the body lowers)
- Gluteus Maximus (the largest glute muscle, keeping the hips extended so the body falls as one line)
- Gastrocnemius (the larger calf muscle nearer the surface, assisting the hamstrings from below the knee)
FAQ
Do I need a partner to do Nordic hamstring curls? A partner holding the ankles is the most common setup, though a sturdy fixed object like a heavy piece of furniture or a dedicated Nordic curl bench can anchor the ankles just as well.
Why are Nordic curls so much harder than other hamstring exercises? The hamstrings are working eccentrically through nearly a full range under the entire upper body’s weight, a demand most hamstring exercises don’t come close to.
Is the Nordic hamstring curl actually proven to prevent injuries? It’s one of the more consistently studied exercises for reducing hamstring strain risk in sprinting and field sports, largely because of the specific eccentric loading pattern, though it works best as part of a broader strength program, not as a standalone fix.
How sore should I expect to be after Nordic curls? Real soreness in the day or two afterward is common, especially early on, given how unfamiliar this eccentric loading pattern is to most people’s hamstrings. Starting with a shallow, assisted range and progressing gradually keeps that soreness manageable.
Next in this series: the Hip Hinge, the hip-hinging hamstring pattern that pairs naturally with this eccentric one.