# Sitting Hamstring Curl On A Chair - Canonical: https://fitwill.app/exercise/9104/sitting-hamstring-curl-on-a-chair/ - Media ID: 9104 - Primary muscle: Hamstrings - Body part: Legs - Equipment: Body Weight - Video: https://fitwill.app/videos/9104/sitting-hamstring-curl-on-a-chair.mp4 ## Description The Sitting Hamstring Curl On A Chair is a bodyweight isolation exercise for the hamstrings performed in a half-kneeling position beside a sturdy chair. You brace your hands on the chair back for balance, place one foot forward on the floor, and rest the opposite knee on the ground. From there, you bend the working knee and lift the heel up toward your hip, squeezing the hamstring at the top before lowering the foot back down under control. Because it requires no weights or machines, this movement is a practical choice for home workouts, travel, warm-ups, or rehab-style training when you want direct hamstring work without equipment. It is also useful for beginners learning what a hamstring contraction actually feels like, since the slow, unsupported range makes the muscle easy to feel and hard to cheat. The primary muscles trained are the hamstrings on the back of the thigh, which flex the knee and draw the heel toward the glutes. The gastrocnemius in the calf assists with knee flexion, and the glutes along with the core stabilize your hips and trunk so the movement stays in the knee joint rather than turning into a hip extension or back arch. The chair matters more than it might seem. Holding the backrest gives you just enough support to stay tall and square through the hips, which lets the working knee move through its full flexion range without your body twisting or collapsing toward the floor. Keep the chair against a wall or in a corner if it slides easily, and pick one that will not tip when you lean on it. Execution is simple but demands patience. Move the heel up deliberately, pause briefly when the knee is fully bent, then take two to three seconds on the way down so the hamstring lowers the foot instead of letting gravity drop it. The lowering phase is where most of the training effect lives, so resist the urge to rush it. A pad or folded towel under the kneeling knee makes the setup far more comfortable, especially on hard floors. Start with two to three sets of ten to fifteen controlled reps per leg, and expect the movement to feel harder on your weaker side, which is exactly the kind of imbalance this exercise helps you notice and address. ## Instructions 1. Position a sturdy chair with its back facing you and place both hands on the top of the backrest, arms straight but shoulders relaxed. 2. Step one foot forward and plant it flat on the floor with the front knee bent, then lower your opposite knee down to the floor so it sits directly under or slightly behind your hip. 3. Point the kneeling leg's foot away behind you with the top or front of the foot resting near the floor, and keep your torso upright with your weight balanced between the chair and your front foot. 4. Brace your abdominal muscles lightly and square your hips so both hips point forward; do not let the pelvis rotate as the leg moves. 5. Bend the kneeling leg's knee and curl the heel up toward your glutes, keeping the knee in contact with the floor and the hip staying still. 6. Pause for one second at the top with the knee fully bent and the hamstring squeezed. 7. Lower the foot back down in two to three seconds until the knee is nearly straight, keeping tension in the hamstring instead of dropping the leg. 8. Exhale as you curl the heel up, and inhale as you lower it back down. 9. Complete all repetitions on one leg, then switch sides so the opposite foot is forward and the other knee works. 10. Between sets, stand up and shake out the kneeling knee, and reposition your towel or pad if the floor feels uncomfortable. ## Tips & Tricks - If your kneecap aches on a hard floor, slide a folded towel or cushion under the kneeling knee before you start; discomfort there usually comes from the surface, not the exercise itself. - The most common mistake is letting the hips rock backward or twist as the heel rises, which shifts work from the hamstrings to the glutes and lower back, so check that your hips stay level in a mirror if possible. - Keep the knee of the working leg on the floor for the entire set; lifting the knee turns the rep into a hip-dominant movement and shortens the hamstring's range. - If you cannot lift the heel very high at first, that is normal, especially with a straight-ish knee; the range improves as hamstring strength and knee-flexion control develop. - Do not slam the foot back down between reps; the two-to-three-second lowering phase is what makes this bodyweight version challenging enough to build strength. - Grip the chair back firmly enough to stay balanced, but avoid leaning your chest onto your hands, which tilts your torso forward and changes the hip angle. - Choose a chair that will not slide or tip; pushing it against a wall takes one variable out of the setup entirely. - Keep the toes of the working leg relaxed. Pointing or flexing the foot hard changes calf involvement but does not add hamstring work, so pick one foot position and stay consistent across reps. - Move your front foot slightly further forward if you feel cramped or off-balance; a longer split stance gives you a more stable base. ## Frequently Asked Questions ### What muscles does the Sitting Hamstring Curl On A Chair work? The hamstrings on the back of the thigh are the primary movers, bending the knee to lift the heel toward the glutes. The calf muscles assist with knee flexion, while the glutes and core stabilize your hips and trunk throughout the set. ### Why does the Sitting Hamstring Curl On A Chair use a chair if it is a bodyweight exercise? The chair is for balance, not resistance. Holding the backrest lets you stay tall and keep your hips square, so the knee can move through its full range without your body twisting or losing stability. ### Is the Sitting Hamstring Curl On A Chair suitable for beginners? Yes, it is one of the most accessible hamstring exercises because it needs no equipment beyond a stable chair. Beginners should focus on slow, controlled reps rather than trying to lift the heel as high as possible. ### Should my kneeling knee stay on the floor during the curl? Yes. The knee stays planted while only the lower leg moves; lifting the knee turns the rep into a hip extension exercise and takes work away from the hamstrings. ### How can I make the Sitting Hamstring Curl On A Chair harder? Slow the lowering phase to three or four seconds, add a two-second squeeze at the top, or pause halfway down. You can also add reps until you reach twenty or more per leg before progressing to loaded leg curls. ### My kneeling knee hurts on the floor. What should I change? Place a folded towel, foam pad, or yoga mat under the kneeling knee before starting. If the joint itself remains painful rather than just the skin or surface contact, stop and consult a professional. ### What can I substitute if I do not have a sturdy chair? Any stable support at about hip height works, such as a countertop, the back of a sofa, or a squat rack upright. The key requirement is something solid you can grip so your hands, not your lower back, handle the balance demand. ### How many reps and sets should I do of the Sitting Hamstring Curl On A Chair? Two to three sets of ten to fifteen controlled reps per leg is a solid starting point. Because the resistance is only your lower leg, higher reps with strict tempo tend to work better than low-rep attempts. ### Why do I feel this more on one leg than the other? Small side-to-side strength differences are common, and the half-kneeling setup exposes them clearly. Match your reps to the weaker leg so both sides progress evenly rather than letting the stronger side set the pace. ### Can I do the Sitting Hamstring Curl On A Chair every day? Because the load is light, frequent practice is generally fine, but treating it like any strength exercise with a day of recovery between harder sessions is a sensible default. Ease off if the hamstrings feel persistently sore or tight.