Leg Curl Alternative: 8 Hamstring Swaps That Actually Bend the Knee

The best leg curl alternatives are the ones that still bend your knee against resistance: the Nordic curl, the slider (or towel) leg curl, the Swiss ball leg curl, the banded lying leg curl and the dumbbell lying leg curl. Romanian deadlifts and good mornings are brilliant hamstring exercises, but they work the muscle at the hip, so on their own they don't replace a curl. If you train at home with nothing, start with slider curls and build towards Nordics. If you've got a band or a bench and a dumbbell, you can copy the machine almost exactly. Here's how each swap works, what kit it needs and how to fit it into a week.

Quick answer: pick a swap for your kit

Kit you have	Best leg curl alternative	Runner-up
Nothing (smooth floor)	Slider or towel leg curl	Nordic curl (feet hooked under a sofa)
Swiss ball	Swiss ball leg curl	Single-leg ball curl
Resistance band	Banded lying leg curl	Banded seated leg curl
Bench and a dumbbell	Dumbbell lying leg curl	Nordic curl (feet under the bench)
Bench with leg developer	Bench lying leg curl	Dumbbell lying leg curl
Barbell or dumbbells, no curl option	Romanian deadlift (plus slider curls)	Good morning

Why knee flexion matters

A leg curl does one job: it bends the knee while the hip stays still. Three of your four hamstring muscles (semitendinosus, semimembranosus and the long head of biceps femoris) cross both the hip and the knee, so they can be trained by hinging or curling. The fourth, the short head of biceps femoris, starts on the thigh bone and only crosses the knee. It has nothing to do at the hip, so a hip hinge leaves it largely idle.

That's the reason people on forums argue in circles about whether RDLs "count". They do train the hamstrings hard. They just train them through the other job.

The research supports using both patterns rather than picking a side. When Bourne and colleagues put recreational athletes through 10 weeks of either Nordic curls or a hip extension exercise, both lengthened the biceps femoris long head fascicles and both grew the semitendinosus, but the hip extension group gained more long head volume (Bourne et al., 2017). So hinge for the long head, curl for the knee-only fibres, and you've covered the whole muscle group.

Hip position changes the curl itself, too. Maeo's team trained 20 adults with a seated leg curl on one leg and a lying curl on the other for 12 weeks, and the seated leg grew more: about 14% in total hamstring volume against 9% (Maeo et al., 2021). Sitting bends the hip, which stretches the two-joint hamstrings while they work. Keep that in mind when you choose a swap, because a few of the home options below can be done seated.

No-equipment leg curl alternatives

1. Nordic curl

Kneel on a mat with your ankles pinned (a partner, a heavy sofa, or the foot of a bench), keep a straight line from knees to shoulders and lower your body towards the floor as slowly as you can. Catch yourself with your hands, push back up and repeat.

It's the hardest move on this list, and the most proven. A meta-analysis of 15 studies covering 8,459 athletes found programmes that included the Nordic curl cut hamstring injury rates roughly in half, with a risk ratio of 0.49 (van Dyk et al., 2019). Most people can't control the full range at first, which is fine. Use a band looped from a high anchor to your chest for help, or lower only as far as you can control and push back up. Our Nordic curl guide has a full progression.

• Sets and reps: 2 to 3 sets of 3 to 6, with a 3 to 5 second lowering phase.

2. Slider or towel leg curl

Lie on your back on a hard floor with your heels on two sliders, paper plates or a folded towel. Lift your hips into a bridge, then drag your heels towards your bottom, keeping your hips high, and slide them back out under control.

This is the best starting point if you've never trained your hamstrings without a machine. Your hips are extended, so it feels like a lying curl, and the slide back out is where most of the work happens. Once two legs are easy for 15 reps, do the curl in with both feet and lower out on one.

• Sets and reps: 3 sets of 8 to 15.

Leg curl alternatives with small kit

3. Swiss ball leg curl

Same set-up as the slider curl, but with your heels on a stability ball. The ball wobbles, so your glutes and trunk work harder to hold the bridge, and you can't cheat by letting your hips sag without the ball rolling away. Single-leg versions are seriously tough.

• Sets and reps: 3 sets of 10 to 15 (or 6 to 10 per leg on one leg).

4. Banded lying leg curl

Anchor a loop band low behind you (a table leg or a door anchor at floor height), lie face down with the band around your ankles, and curl your heels towards your bottom. Pause, then lower slowly. Bands get harder as they stretch, so the top of the rep is the hardest part, which roughly matches a machine.

You can also sit on a chair facing the anchor and curl your heel back underneath you. That's the closest home copy of the seated leg curl, and given the Maeo results it's worth rotating in.

No anchor? A short loop band works too. Lie face down with the loop around both ankles, keep one leg pinned to the floor and curl the other heel towards your bottom, so the resting leg acts as the anchor. The Gritin loop bands we cover in our Gritin resistance bands review are this short latex type, with five tensions to progress through. They're too short for the anchored or seated versions, so you'd want a longer band for those.

• Sets and reps: 3 sets of 15 to 25.

5. Dumbbell lying leg curl

Lie face down on a flat bench with your knees just off the end, squeeze a light dumbbell between your feet and curl it up until your shins are vertical. Lower it back down over 2 to 3 seconds. Start lighter than you think (5 to 8kg is plenty for most people), because the hard part is keeping hold of it, not lifting it.

A partner can place the dumbbell for you; otherwise, sit on the end of the bench, grip it between your feet and lie back carefully. Any sturdy flat bench works. Our best weight bench UK guide covers adjustable and foldable picks.

• Sets and reps: 3 sets of 10 to 12.

Machine-style alternative at home

6. Bench with a leg developer

If you want to load the real movement with plates, buy a bench with a leg developer attachment. The padded roller arm at the front lets you do lying leg curls and seated leg extensions from one footprint.

The Fostoy foldable bench we cover in our weight bench guide has a leg developer with two positions for extensions and lying curls, and its weight rod takes standard and Olympic plates up to a stated 110lb (about 50kg). The attachment comes off when you only want a flat and incline bench. Check the roller pad position against your leg length before buying, because bench-mounted developers suit some heights better than others.

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Hip-hinge moves: useful, but not a replacement

7. Romanian deadlift

Hold a barbell or dumbbells, soften your knees, push your hips back and lower the weight down your thighs until you feel a strong stretch in your hamstrings, then drive your hips forward to stand. It's one of the best hamstring builders there is, and it loads them heavier and at longer lengths than any curl. Our Romanian deadlift guide covers set-up and depth.

The catch is the knee. Your knee angle hardly changes, so the short head of biceps femoris gets very little. Use RDLs as your main hamstring lift and add a curl variation from the list above.

8. Good morning

Bar on your upper back, soft knees, hinge forward until your torso is close to parallel with the floor, then stand back up. It trains the same hip-extension job as the RDL with a longer lever, so you'll need much less weight. Same verdict: excellent, but it's a hinge, not a curl.

How to programme your leg curl alternative

Treat it the way you'd treat the machine: an accessory after your main lower-body lift. Two hamstring sessions a week is a good target, with one heavy hinge and one curl variation across those days.

A simple home hamstring day might look like this:

1. Romanian deadlift: 3 sets of 8.
2. Nordic curl (assisted if needed): 3 sets of 4 to 5.
3. Slider leg curl or banded seated curl: 2 sets of 12 to 15.

Progress Nordics by lowering further or slower before you add reps. For slider and ball curls, move from two legs to the single-leg eccentric, then fully single-leg. With bands, step further from the anchor or move up a tension. Our hamstring exercises guide has a full dumbbell hamstring workout if you'd like more structure.

Expect real soreness the first time you do Nordics, even in low reps. That's the lowering phase at work. Do one set in your first session and add a set each week.

Common mistakes with leg curl swaps

Letting the hips sag on slider and ball curls. Once your hips drop, the movement turns into a half-hearted leg slide and the hamstrings lose tension. Keep your hips locked in the bridge for the whole set.

Bending at the waist on Nordics. Piking your hips back shortens the lever and makes the rep easier, but it shifts the work away from the knee. Squeeze your glutes and keep that straight line from knee to shoulder.

Dropping the lowering phase. Bands and bodyweight are light compared with a machine stack, so tempo has to make up the difference. Take two to three seconds on the way out or down on every rep.

Treating RDLs as the whole job. This is the big one. A hinge-only programme leaves the knee-only part of the hamstrings under-trained, so keep at least one curl in the plan.

Recommended reads

• Leg curl: how to do it, muscles worked and home alternatives
• Nordic curl: how to do it, muscles worked and progressions
• Romanian deadlift: how to do it, muscles worked and benefits
• Best hamstring exercises plus a dumbbell hamstring workout
• Best weight bench UK: adjustable and foldable picks