Exercise Library

Best Hamstrings Exercises

Underdeveloped hamstrings are a leading cause of ACL injuries and pulled muscles. Here's how to train them for strength, size, and resilience.

Quick Answer

The hamstrings are three muscles on the back of the thigh (biceps femoris, semitendinosus, semimembranosus). They cross both the hip (extension) and the knee (flexion), meaning you need both hinge movements and leg-curl movements to fully train them.

20+ Best Hamstrings Exercises

Ordered by popularity and training value. Click any exercise for full form cues, video demo, common mistakes, and alternatives.

Hamstrings Anatomy

The hamstrings are three muscles on the back of the thigh (biceps femoris, semitendinosus, semimembranosus). They cross both the hip (extension) and the knee (flexion), meaning you need both hinge movements and leg-curl movements to fully train them.

Hinge-pattern lifts (RDL, good morning) emphasize hamstring lengthening under load — the best stimulus for size. Leg curls train knee flexion and balance the stimulus.

How to Train Hamstrings

Sets / reps
8–15 hard sets per week. 6–10 reps on RDLs and good mornings; 8–15 on leg curls.
Frequency
2 sessions per week (can overlap with glute/back day).
Rest
2–3 min on heavy RDLs; 60–90 sec on leg curls.

Training Tips

  • Do one hinge exercise and one leg-curl variation every hamstring session — they train different aspects of the muscle.
  • Nordic curls are the gold standard for hamstring health. Even if you can only do partials, include them.
  • Don't confuse deadlifts with hamstring work. Conventional deadlifts are mostly posterior chain + back. RDLs are the hamstring-specific hinge.

Common Mistakes

  • !Rounding the lower back on RDLs. Brace hard, keep spine neutral, and hinge from the hips — not the waist.
  • !Going too heavy on Nordic curls too early. Start with partials and negatives before attempting full reps.
  • !Ignoring leg curls because they're 'isolation.' Research shows hinge + knee flexion gives better hamstring growth than hinge alone.

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Frequently Asked Questions

What are the best hamstring exercises?

Romanian deadlifts (the king of hamstring builders), Nordic curls (best for hamstring health and ACL protection), and seated/lying leg curls. A balanced program includes at least one hinge and one leg-curl variation.

How often should I train hamstrings?

Twice per week. Hamstrings recover in 48–72 hours. Most lifters stack hamstring work on their leg day plus their back/deadlift day.

Why do my hamstrings cramp during workouts?

Usually from dehydration, low electrolytes, or weak hamstrings being asked to do hard work unexpectedly. Drink water, eat enough sodium and potassium, and build up volume gradually.

Can you build big hamstrings with no equipment?

It's harder without equipment, but possible. Nordic curls (with feet anchored under a couch or partner holding your ankles), single-leg Romanian deadlifts, and hamstring bridges all work. For faster growth, get access to a leg-curl machine or resistance bands.

Do deadlifts count as hamstring training?

Somewhat. Conventional deadlifts hit the hamstrings but mostly train the posterior chain as a whole. For hamstring-specific growth, Romanian deadlifts or stiff-legged deadlifts are far superior.

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