Hamstrings intermediate

World's Greatest Stretch

A intermediate strength movement that trains the hamstrings.

Force Type

Static

general

Difficulty

Intermediate

strength

Variations

0

equipment swaps

Muscles

4

primary + secondary

The verdict

World's Greatest Stretch has 3-step instructions, documented to a similar depth as 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

#771 of 868

3 numbered source steps; the longest instruction list ranks #1.

Instruction text

#261 of 868

A separate character-length placement prevents step count from standing in for explanatory detail.

How PlainExercise computes exercise placement

Hamstrings

World's Greatest Stretch is a intermediate strength movement that trains the Hamstrings along with calves and glutes. There are 0 known variations and 8 peer exercises that target the same primary muscle.

  • 1 of 9 exercises targeting the Hamstrings
  • Level: intermediate

PlainExercise cross-links 0 variations and 8 peer exercises sharing the same primary muscle.

What the World's Greatest Stretch Data Reveals · DEEP · STATIC/PATTERN

World's Greatest Stretch opens on force profile: a STATIC pattern pattern for hamstrings, force direction is the first filter on this mid-level record.

3 steps sit in the lower third (< 4), a thin upstream record where taxonomy badges carry most of the page identity.

World's Greatest Stretch is classified as a intermediate-level strength movement with a static force profile, primarily training the Hamstrings with secondary engagement of the calves, glutes, quadriceps. The canonical form is bodyweight-only in the stretching category. Within the hamstrings cohort, 9 catalogued movements share the primary target; no alternate-equipment variations are catalogued yet.

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.

Exercise profile

Profile attributes for World's Greatest Stretch
Attribute Value
Difficultyintermediate
Mechanic-
Forcestatic
Equipmentnone
Categorystretching
Primary muscleHamstrings
Secondary muscles3
Variations available0

Source: Free Exercise DB (CC0); profile derived per exercise record.

World's Greatest Stretch catalog footprint

Among 79 exercises whose primary muscle is hamstrings, World's Greatest Stretch ranks #29 by catalogued variation count (0 listed heres). The upstream file attaches 2 images to this slug. See the step-count ranking for hamstrings for peer documentation depth.

Muscles worked

According to the Free Exercise DB classification, World's Greatest Stretch trains the hamstrings as the prime mover, with 3 muscles assisting. The source classifies muscles as primary or secondary, it does not measure activation, so we show involvement, not percentages.

Prime mover Hamstrings
Also worked (3)
calves glutes quadriceps
Level: intermediate Force: static

Source: Free Exercise DB primary/secondary muscle classification. Involvement, not measured activation, actual recruitment varies by load and form.

Intensity context

For reference, here is where common activities sit on the MET intensity scale. World's Greatest Stretch 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 Intensity Zones, Exercise Intensity Chart Horizontal bar chart showing how six common exercises map to four MET intensity zones: Light (1-3 MET), Moderate (3-6 MET), Vigorous (6-9 MET), and Very Vigorous (9+ MET). Walking at 3.5 MET falls in Moderate; Jump Rope at 12.3 MET reaches Very Vigorous. Light Moderate Vigorous Very Vigorous 0 3 6 9 12 15 MET (Metabolic Equivalent of Task) Walking 3.5 Cycling 6.8 Jogging 7 Swimming 9.8 Jump Rope 12.3 Light (0-3 MET) Moderate (3-6 MET) Vigorous (6-9 MET) Very Vigorous (9-+ MET)

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

  1. This is a three-part stretch. Begin by lunging forward, with your front foot flat on the ground and on the toes of your back foot. With your knees bent, squat down until your knee is almost touching the ground. Keep your torso erect, and hold this position for 10-20 seconds.
  2. Now, place the arm on the same side as your front leg on the ground, with the elbow next to the foot. Your other hand should be placed on the ground, parallel to your lead leg, to help support you during this portion of the stretch.
  3. After 10-20 seconds, place your hands on either side of your front foot. Raise the toes of the front foot off of the ground, and straighten your leg. You may need to reposition your rear leg to do so. Hold for 10-20 seconds, and then repeat the entire sequence for the other side.

World's Greatest Stretch Documentation Depth

World's Greatest Stretch carries 3-step instructions (797 characters of Free Exercise DB text) - enough upstream detail to compare documentation depth inside the hamstrings cohort, not just the taxonomy badges above. 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 #19 of 79 by instruction-character length (1.28× the cohort average).

The assistant set lists 3 secondary muscles (calves, glutes, quadriceps). That multi-muscle footprint is part of why a long instruction record matters: sparse Free-Exercise-DB stubs often stop at a one-line cue and never name the assistants, so their pages stay short by construction.

Other well-documented hamstrings movements (same ≥500-character bar):

Common mistakes

  • Rushing through reps, controlled tempo (2-3s down, 1-2s up) is what drives muscle tension on World's Greatest Stretch, not raw speed.
  • Cutting the range of motion short - moving the hamstrings through its full safe range on World's Greatest Stretch is what most reliably separates effective reps from wasted ones.
  • Using momentum instead of muscle, isolation movements like World's Greatest Stretch reward strict form. If you're swinging the weight, it's too heavy.
  • Loading before grooving the pattern, practice the movement with light resistance until the path feels automatic, then add load.
  • Breathing out of sync with the lift, brace and inhale during the lowering phase, exhale on the exertion.

Who this is for

  • People with 6+ months of consistent training who can perform basic compound lifts with good form
  • People who want to train the Hamstrings and secondarily calves, glutes
  • People training at home without equipment

Who this is NOT for

  • People hunting equipment swaps, PlainExercise lists 0 catalogued variations for World's Greatest Stretch; browse 8 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 World's Greatest Stretch 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 expert-level movements that train the same muscle.

Safety notes · BODYONLY · STATIC/PATTERN · MID

  • Intermediate STATIC/PATTERN: warm up mobility matching hamstrings before World's Greatest Stretch.
  • Sharp or joint pain is a stop signal. Muscle soreness during sets is normal; pain is not.
  • Adjust sets, reps, and rest to recovery; 3 upstream steps are a template, not a prescription.
  • General information only. Consult a physician or certified trainer before starting any new exercise program.

Nationwide exercises with similar documentation depth

Two Free Exercise DB peer sets for World's Greatest Stretch, drawn across all muscles (not the hamstrings-only related list below). Each metric produces a different neighborhood.

Other exercises that target the Hamstrings.

See all Hamstrings exercises.

Using the world's greatest stretch

A intermediate strength movement for the hamstrings - here's how 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.

Source: Free Exercise DB (CC0) open exercise catalogue, 2026.

Exercise composition and corpus terciles computed by PlainExercise from catalogued records; see the methodology page.

Disclaimer: General information only. Consult a physician or certified trainer before starting any new exercise program.

Data as of: July 2026 (last ingest from source)