Lying Leg Curls
A beginner isolation movement that trains the hamstrings with a machine.
Force Type
Pull
direction of effort
Difficulty
Beginner
training level
Variations
0
equipment swaps
Muscles
1
primary + secondary
The verdict
Lying Leg Curls has 4-step instructions, more thoroughly documented than most of the 79 hamstrings exercises PlainExercise catalogues.
Ranked against the 79 hamstrings exercises PlainExercise currently catalogues, not the full exercise-science literature.
Catalog lens
Two ways this record sits in the source corpus
These are placement measures for the documented record, not a score for exercise quality, safety, or suitability.
Instruction steps
#493 of 868
Typical documentation depth
Numbered source steps, ranked across every documented exercise.
Instruction text
#196 of 868
More thorough than most
A separate character-length placement prevents step count from standing in for explanatory detail.
Lying Leg Curls vs every catalogued exercise by instruction-text length
Where this record's instruction-character count sits among all 873 Free Exercise DB exercises with instructions, not a rating of the movement itself.
876 196th of 873 higher than 676 of 873 exercises
All exercises, banded by instruction-text character count
Each bar is a band; taller bars hold more exercises. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source Free Exercise DB · 2026-07-10
Lying Leg Curls is documented from the Free Exercise DB (CC0) extract, last ingested July 2026. Classification, muscle roles and instruction text are source facts; the placement and cohort measures on this page are computed by PlainExercise and are not a rating of the movement.
What the Lying Leg Curls Data Reveals · DEEP · PULL/ISOLATION
Lying Leg Curls stands out on mechanic class: joint involvement separates this page from isolation peers.
A mid-length step list is enough detail to compare form without the longest upstream essays.
Across 79 catalogued hamstrings movements, the average instruction record is 621 characters and 3.9 steps; 41 of those (51.9%) clear the same ≥500-character rich bar used here. This page ranks #13 of 79 by instruction-character length (1.41× the cohort average).
Among the 67 exercises that also use a machine, average instruction length is 786 characters; 23 of those peers are longer than this record. Equipment-matched peers are the honest comparison when you are choosing a substitute implement for the same pattern.
Other well-documented hamstrings movements (same ≥500-character bar):
- Power Clean (24 steps, 3,264 chars)
- Clean (6 steps, 1,688 chars)
- Power Clean from Blocks (5 steps, 1,423 chars)
- Split Snatch (6 steps, 1,289 chars)
- Power Snatch (5 steps, 1,116 chars)
Context matters: taxonomy (level, mechanic, force, musculature, equipment) does not account for individual biomechanics, joint history, or recovery. Common-mistake framing below is derived from classification fields, not case-specific coaching. Not medical or personal-training advice. Consult a physician or certified trainer before starting, especially with injuries, cardiovascular conditions, recent surgery, or pregnancy.
Lying Leg Curls catalog footprint
Among 79 exercises whose primary muscle is hamstrings, Lying Leg Curls ranks #29 by catalogued variation count. The upstream file attaches 2 images to this slug. See the step-count ranking for hamstrings for peer documentation depth.
Muscles worked
The Free Exercise DB classifies each muscle as primary or secondary. It does not measure activation, so we show involvement, not percentages.
Source: Free Exercise DB primary/secondary muscle classification. Actual recruitment varies by load and form.
Intensity context
For reference, here is where common activities sit on the MET intensity scale. Lying Leg Curls does not have a measured MET in the source data, its intensity depends on the load and effort you use. Estimate calories for any activity with the calorie calculator.
MET values from the Compendium of Physical Activities (Ainsworth et al., 2011). A general reference scale, not a rating of this specific movement.
How to do it
- Adjust the machine lever to fit your height and lie face down on the leg curl machine with the pad of the lever on the back of your legs (just a few inches under the calves). Tip: Preferably use a leg curl machine that is angled as opposed to flat since an angled position is more favorable for hamstrings recruitment.
- Keeping the torso flat on the bench, ensure your legs are fully stretched and grab the side handles of the machine. Position your toes straight (or you can also use any of the other two stances described on the foot positioning section). This will be your starting position.
- As you exhale, curl your legs up as far as possible without lifting the upper legs from the pad. Once you hit the fully contracted position, hold it for a second.
- As you inhale, bring the legs back to the initial position. Repeat for the recommended amount of repetitions.
Common mistakes
- Rushing through reps before the pattern is grooved - at this stage, a slow, controlled tempo (2-3s down, 1-2s up) on Lying Leg Curls teaches the nervous system the movement far faster than speed does.
- Cutting the range of motion short - moving the hamstrings through its full safe range on Lying Leg Curls is what most reliably separates effective reps from wasted ones.
- Using momentum instead of muscle, isolation movements like Lying Leg Curls reward strict form. If you're swinging the weight, it's too heavy.
- Shrugging the shoulders up toward the ears on pull movements, keep shoulder blades down and back to load the correct muscles.
- Breathing out of sync with the lift on Lying Leg Curls - brace and inhale during the lowering phase, exhale on the exertion, especially important with a machine where control matters most.
Who this is for
- People new to resistance training who want to build a foundation in the movement pattern
- People who want to train the Hamstrings
- People who have access to a machine
Who this is NOT for
- People hunting equipment swaps, this record has none to offer; browse the peer hamstrings exercises for alternate patterns instead.
- Anyone with acute pain in the joints or muscles involved, pain is a stop signal, not a soreness signal
- People with unresolved injuries in the loaded joints, seek clearance from a physical therapist first
- Anyone with a recent surgery, cardiovascular limitation, or pregnancy complication without physician clearance
Progression path
Once Lying Leg Curls feels comfortable with your current load, progress by (a) adding reps until you can complete 12+ per set, (b) increasing resistance by 2.5-5%, (c) moving to harder variations such as single-limb or longer lever versions, and eventually (d) stepping up to intermediate-level movements that train the same muscle.
See the Progression guide for a full framework on when to advance, and the Compound vs Isolation guide to decide when to prioritize this movement in your program.
Safety notes · MACHINE · PULL/ISOLATION · FLOOR
- On PULL/ISOLATION hamstrings work, warm up 5–10 minutes before loading Lying Leg Curls; keep first sets light until the path feels automatic.
- Sharp or joint pain is a stop signal. Muscle soreness during sets is normal; pain is not.
- Beginners on MACHINE gear: cut volume before cutting form, drop a set rather than rush reps.
- General information only. Consult a physician or certified trainer before starting any new exercise program.
Curated workout appearances
Lying Leg Curls is not currently featured in one of the 186 curated workout routines on this site.
Nationwide exercises with similar documentation depth
Two Free Exercise DB peer sets for Lying Leg Curls, drawn across all muscles (not the hamstrings-only related list below). Each metric produces a different neighborhood.
Similar instruction step count
Nearest catalog records by numbered steps.
Similar instruction text length
Nearest catalog records by upstream instruction characters.
Related exercises
Other exercises that target the Hamstrings.
See all Hamstrings exercises.
Using the lying leg curls
Three ways to put it to work.
- Train the hamstrings 2–3 times a week with 48+ hours between hard sets; pair this with other hamstrings movements for balanced development. All hamstrings exercises
- Match the load and rep range to your goal, strength, size, or endurance each call for a different scheme. Strength vs hypertrophy
- As an isolation movement, use it to target the hamstrings directly after your compound lifts. Compound vs isolation
Form before load. If a movement causes sharp or joint pain, stop and substitute a safer alternative, this is general information, not medical or training advice.