Natural Leg Curl
A bodyweight hamstring curl where you lower your body from kneeling. Also known as Nordic curl.
Short answer
Natural Leg Curl: an advanced bodyweight exercise for the hamstrings. You need an anchor point. A typical target: 3 sets of 3-8 reps. If it is still too hard, start with the easier variation, “Assisted Nordic”.
Benefits
Step-by-Step Guide
Follow these steps for perfect form
Kneel with feet anchored.
Keep body straight from knees to head.
Lower forward as slowly as possible.
Catch yourself and push back up.
Pro Tips
Common Mistakes
Target Muscles
What muscles does the natural leg curl work?
The hamstrings control the descent eccentrically against nearly your full bodyweight, in the knee flexion pattern that machine curls train under far less load. The glutes must hold the hips extended so the movement happens at the knee alone. The core holds the line from knee to shoulder. Coming back up is one of the hardest concentric hamstring contractions available without equipment, and most people will need hand assistance for a long time.
Primary Muscles
Secondary Muscles
How to train it
Three sets of 3 to 8 reps, once or twice a week. Lower slowly, catch yourself with the hands, and push back to the start. Progress by lengthening the range you can control before the hands take over. The soreness after early sessions is substantial, so start with a single set and build. This and the Nordic curl overlap heavily - there is no need to do both in the same week.
If you are stuck
Bending at the hips removes most of the hamstring load and is the most common fault; squeeze the glutes and keep a straight line. Falling too fast trains nothing and risks a strain - if you cannot slow the descent at all, use a band or reduce the range drastically. Not enough range is fine as a starting point provided it is being extended over time; a controlled quarter is worth more than an uncontrolled full descent.
Progressions
Level up your training
Natural Leg Curl questions
What equipment do I need for natural leg curls?
You need something that slides on the floor - furniture sliders, a towel on hardwood, paper plates on carpet, or slide boards. You can also use socks on a smooth floor.
How are natural leg curls different from Nordic curls?
Nordic curls are done kneeling with fixed feet, lowering your body forward. Natural leg curls are done lying on your back, curling your heels toward your glutes. Both effectively target hamstrings.
Related Exercises
More Legs exercises
Bodyweight Squat
The fundamental lower body movement. Essential for leg strength and mobility.
Pistol Squat
The king of bodyweight leg exercises. A full single-leg squat requiring strength, balance, and mobility.
Shrimp Squat
A challenging single-leg squat where your rear foot is held behind you, touching your knee to the ground.
Ready to Practice Natural Leg Curl?
Find a calisthenics park with anchor point near you and start training.