Nordic Curl Protocols: How to Actually Build the Strength

The Nordic curl is a bodyweight eccentric hamstring exercise. The feet are anchored, the knees rest on padding, and the lifter lowers the torso toward the floor by resisting knee flexion with the hamstrings. It produces extreme eccentric loading through the hamstrings at long muscle lengths, which is exactly the quality implicated in hamstring strain protection in the research literature.

The problem with programming Nordic curls is that most untrained lifters cannot do a single full-range rep. The hamstrings simply give out somewhere in the descent, and the lifter falls forward onto their hands. That collapse is not useful training — it is failure at a point that does not load what you wanted to load. Skipping the exercise entirely is one response; the better response is to progress toward it.

The cleanest progression ladder starts with band-assisted Nordic curls. A heavy resistance band anchored at head-height and looped under the chest provides assistance through the bottom of the range, where most lifters fail first. As strength builds, the band gets thinner or the anchor point gets lower, gradually shifting more of the load onto the hamstrings. Sets of 4-6 reps with 90 seconds of rest is a reasonable starting prescription.

A second common progression is the partial-range Nordic. Lower only to a point you can control — say 45 degrees from vertical — and return. The range progresses over weeks. This method does not require a band but requires more honesty; it is easy to let the range creep while the control does not, which means falling forward in a slightly more extended position than before.

Once full-range Nordics are possible, the programming question shifts to dose. Research on hamstring injury prevention (Arnason et al., 2008; Petersen et al., 2011) found meaningful injury reduction from programs using roughly 25-50 eccentric reps per week distributed across two sessions. For a full-range Nordic lifter, that translates to 2-3 sets of 5-8 reps, twice per week. More volume than that does not clearly produce better outcomes and accumulates soreness that interferes with other training.

Eccentric-only training like this produces substantial delayed-onset muscle soreness — more than most lifters are used to from their usual accessory work. Progressing volume slowly matters more than with concentric exercises. Going from zero to three sets of eight in the first week is a common path to a week of barely being able to sit down, which then leads to the exercise being abandoned. Two sets of five for the first two weeks, then four, then six, is slower than most lifters want but much more sustainable.

LiftProof tracks Nordic curls as a bodyweight exercise with rep counts, and you can log the assistance band used as a note. Watch the reps-per-session trend alongside your hamstring-related soreness. If one is climbing faster than the other is falling, the dose is too high too fast.