You can replace hamstring curls with exercises that work your hamstrings through hip extension rather than knee flexion, or with bodyweight movements that mimic the curl pattern without a machine. The best approach combines both types, since research shows the hamstrings activate differently depending on the movement.
A study in the Journal of Human Kinetics found that all three major hamstring muscles were more involved during knee flexion exercises than hip extension exercises. That means skipping curls entirely and only doing deadlift variations leaves a gap. The goal is to pick alternatives that cover both movement patterns, not just one.
Why You Might Want Alternatives
The seated or lying leg curl machine isolates the hamstrings through knee flexion with your hips mostly fixed in place. It works, but it has limitations. The movement doesn’t train your hamstrings to coordinate with your glutes and lower back the way they do in real life. It also locks you into a fixed path that some people find aggravating on their knees. And if you train at home or in a minimal gym, you simply don’t have the machine.
The alternatives below fall into two categories: hip-dominant exercises that load the hamstrings in a stretched position while your knees stay relatively straight, and knee-dominant exercises that replicate the curling motion without a machine.
Romanian Deadlifts
The Romanian deadlift is the most direct replacement for hamstring curls if you have access to a barbell or dumbbells. It trains the hamstrings through hip extension while they’re under a deep stretch at the bottom of the movement. EMG data from McAllister et al. showed that the Romanian deadlift produced roughly 360 mV of biceps femoris activation (the outer hamstring), compared to about 240 mV during the prone leg curl. For the inner hamstring (semitendinosus), the prone curl was slightly higher at 255 mV versus 210 mV for the Romanian deadlift.
What this tells you: the Romanian deadlift hits the outer hamstring harder than curls do, while curls have a slight edge on the inner hamstring. If you’re choosing one exercise and can only pick the Romanian deadlift, you’re covering most of the work. But ideally you’d pair it with a knee-flexion alternative from the list below.
Stand with feet hip-width apart, hold the weight in front of your thighs, and hinge at the hips while keeping a slight bend in your knees. Lower the weight until you feel a strong stretch in your hamstrings, then drive your hips forward to stand. The key is keeping the bar close to your legs and your back flat throughout.
Nordic Hamstring Curls
If you want one bodyweight exercise that replaces machine curls and also builds injury resilience, the Nordic hamstring curl is it. Sports medicine guidelines give it the strongest evidence rating for hamstring strain prevention, and it’s the only exercise specifically named as essential in clinical practice recommendations published in the Journal of Orthopaedic & Sports Physical Therapy.
You kneel on the ground with your feet anchored under something heavy (a loaded barbell, a couch, a partner holding your ankles). From the kneeling position, you slowly lower your torso toward the floor, resisting gravity with your hamstrings for as long as possible, then catch yourself with your hands and push back up. The eccentric (lowering) phase is where the real benefit lives.
A meta-analysis in Sports Medicine found that programs lasting six weeks or longer produced very large improvements in eccentric hamstring strength, regardless of whether people did high or low training volume. One study reported an 11% increase in eccentric strength after a 10-week Nordic curl program, while a comparison group doing traditional hamstring curls saw no strength improvement at all. Athletes with higher eccentric hamstring strength were 17 to 21% less likely to suffer a hamstring strain than those with lower levels. For every 10 newtons of additional force an athlete could produce during the Nordic curl, their injury risk dropped by 6 to 9%.
Nordics are brutally hard at first. Start with just the lowering phase, controlling the descent for three to five seconds, and use your hands to push yourself back up. You can also limit your range of motion initially and increase it over several weeks.
Sliding Leg Curls
This is the closest replication of a leg curl machine you can do at home. Lie on your back with your knees bent, feet on something that slides: furniture pads on hardwood, socks on tile, a towel on a smooth floor, or a stability ball. Lift your hips into a bridge position, then slowly extend your legs out until they’re nearly straight, and pull them back in by curling your heels toward your glutes.
What makes sliders better than a machine for many people is that they force your glutes to work through the hip bridge position the entire time. You’re training hip extension and knee flexion simultaneously, which more closely matches how the hamstrings function during running and jumping. Keep your weight through your heels and off your toes to prevent your quads from taking over. Work toward full range of motion over time, starting with partial extensions if the full version is too difficult.
Single-leg slider curls are a natural progression and will expose any strength imbalances between your left and right sides.
Good Mornings
Good mornings load the hamstrings through a deep hip hinge with a barbell on your upper back. They’re a staple in powerlifting programs for building hamstring and back extensor strength together. Research published in PeerJ confirmed that hamstring muscle activity increases as the load goes up, and that the hips move through a large range of flexion, creating a significant loaded stretch on the hamstrings.
One thing to know: despite the common coaching cue to keep a “neutral spine,” the same study found that the lumbar spine does flex and extend during the movement, and the lower back muscles showed the highest EMG activity relative to their maximum. This makes good mornings an effective back strengthener, but it also means you should build up the weight gradually and avoid loading heavy if you have a history of lower back issues. Start light, keep the movement controlled, and treat this as a complement to your other hamstring work rather than your primary exercise.
Kettlebell Swings
The kettlebell swing trains the hamstrings explosively through a rapid hip hinge. Unlike the slow, controlled movements above, swings develop power and rate of force production. Your hamstrings fire hard during the backswing to decelerate the kettlebell, then your glutes and hamstrings drive it forward.
Swings won’t replace curls for building maximum hamstring strength or size, but they fill a role that no slow exercise can: training the hamstrings to produce force quickly. This matters for sprinting, jumping, and any sport that involves sudden acceleration. Use them as a complement to heavier hip-hinge work like Romanian deadlifts.
Resistance Band Curls
If you specifically want the knee-flexion movement of a hamstring curl without a machine, a resistance band gets you there. Anchor a loop band to something low and sturdy, like a heavy table leg or a door anchor near the floor. Wrap the band around your ankles at the Achilles tendon, walk out until you feel adequate tension, and curl your heels toward your glutes while lying face down.
You can also use an adjustable bench set to a slight incline to change the pre-stretch angle, which shifts where the exercise feels hardest during the range of motion. Band tension increases as the band stretches, so the resistance curve is the opposite of a machine curl (hardest at peak contraction, easiest at the bottom). This makes bands a decent option for high-rep sets and metabolic work, but they won’t perfectly replicate machine resistance.
How to Combine These Exercises
The most effective hamstring program includes at least one hip-dominant exercise and one knee-dominant exercise. A simple setup for two hamstring sessions per week might look like this:
- Session 1: Romanian deadlifts (3 sets of 8 to 10 reps) paired with Nordic curls (3 sets of 4 to 6 reps, focusing on the lowering phase)
- Session 2: Good mornings (3 sets of 10 to 12 reps) paired with sliding leg curls (3 sets of 8 to 12 reps)
If you’re training at home with no equipment at all, Nordic curls and sliding leg curls together cover both movement patterns. Add kettlebell swings if you have a kettlebell and want the power component. The key takeaway from the research is that hamstring muscles respond best when they’re trained in a lengthened position, so prioritize full range of motion on every exercise you choose.