# Sphinx Heel Drop - Canonical: https://fitwill.app/exercise/8550/sphinx-heel-drop/ - Media ID: 8550 - Primary muscle: Hamstrings - Body part: Thighs - Equipment: Exercise Mat - Video: https://fitwill.app/videos/8550/sphinx-heel-drop.mp4 ## Description The Sphinx Heel Drop is a bodyweight movement performed from a prone position, propped up on your forearms in what is commonly called the sphinx position. From there, you bend your knees to lift your feet off the floor, then slowly lower your heels back down toward the mat and lift them again. Because gravity is pulling your lower legs toward extension the entire time, the real work happens on the way down: your hamstrings contract eccentrically to control the descent instead of letting your feet flop to the floor. The lift itself is a knee flexion, which is the hamstrings' primary job, and the gastrocnemius assists because it crosses the knee joint. Holding the sphinx position keeps your chest lifted and your hips gently extended, so the glutes and the muscles along your lower back work isometrically to keep your pelvis and spine steady. The forearms-and-chest support also asks for a modest, sustained effort from the chest and shoulders, which is why the position feels more demanding than it looks. Setup matters here more than in most floor exercises. Your elbows should sit directly under your shoulders so your upper body is supported rather than collapsed, and your hips should stay in contact with the mat throughout. If your elbows drift forward or your lower back sags, the lumbar spine takes stress it does not need, and the hamstring contraction loses its clean line of pull. Crossing your ankles, as shown in the starting position, is a comfortable way to keep the legs tracking together and prevents the feet from drifting apart as they rise and lower. Execution comes down to tempo. Lift your feet by squeezing the heels toward your glutes, pause briefly at the top, then take two to three full seconds to lower the heels back to the mat. Dropping the heels quickly turns the exercise into a ballistic swing and removes most of the training effect, while a slow descent keeps constant tension on the hamstrings and teaches control through the end range of knee extension. This movement suits people who train at home with minimal equipment, lifters looking for a controlled hamstring burn after heavier leg curls, and anyone rehabilitating or re-conditioning the back of the thigh with gentle, joint-friendly loading. It also pairs naturally with glute bridges or bird dogs in a floor-based posterior chain circuit. Because the load is only your lower legs, progress comes from slower lowering, higher reps, or adding an ankle weight rather than from rushing the reps. A few practical points will keep the exercise productive. Keep your neck in line with your spine rather than craning upward, keep the hips glued down so the lift comes from the knees and not from an arch in the lower back, and stop the set when your heels start slamming down, since that is the clearest sign your hamstrings are no longer controlling the movement. ## Instructions 1. Lie face down on an exercise mat and prop yourself up onto your forearms, elbows stacked directly under your shoulders, chest lifted and neck in a neutral line. 2. Draw your shoulder blades down and back so you are resting on your forearms and chest rather than collapsing into your shoulders. 3. Bend both knees and cross one ankle over the other, keeping your thighs and hips in contact with the mat. 4. Lift your feet toward the ceiling by bending your knees further, bringing your heels up as high as your knees allow while your hips stay glued to the floor. 5. Squeeze briefly at the top of the lift, feeling the contraction in the backs of your thighs. 6. Lower your heels under control, taking two to three seconds until your feet touch down and your knees are nearly straight. 7. Pause for a moment with the heels down, then drive the feet back up to start the next repetition without resting. 8. Exhale as you lift your heels and inhale slowly as you lower them, keeping your breathing steady instead of holding your breath. 9. Keep your gaze on the mat slightly ahead of your hands so your neck stays long and your upper back stays relaxed. 10. Complete your set, uncross your ankles, and lower your chest to the mat to reset. ## Tips & Tricks - The most common mistake is letting the heels drop fast. If your feet slap the mat, your hamstrings have checked out; slow the descent until you can lower them silently. - If your elbows creep forward and your chest sinks, re-stack them under your shoulders each set. A collapsed torso turns this into a passive low-back hang instead of a supported lift. - Do not lift your thighs off the mat to get the feet higher. Height comes from knee bend, not hip extension, and popping the hips up loads the lumbar spine. - Crossing the ankles keeps the feet from splaying, but swap which ankle is on top halfway through your set to keep the tension even. - You will feel this in your calves as well as your hamstrings, since the gastrocnemius crosses the knee. That is normal; just make sure the back of the thigh, not the calf, is doing the lifting. - If your lower back pinches, reduce how high you lift your heels. A smaller, fully controlled arc beats a big one that arches your spine. - To make the set harder, pause for two seconds at the top of each lift or add a light ankle weight rather than speeding up. - Keep your forearms parallel and your hands relaxed on the mat. Gripping the floor and shrugging toward your ears wastes energy and tightens the neck. - Warm up your knees with a few gentle standing leg curls first, since this move takes the knee through flexion under load from the very first rep. ## Frequently Asked Questions ### What muscles does the Sphinx Heel Drop work? The hamstrings are the prime movers, lifting and controlling the feet through knee flexion and a slow lowering. The glutes and lower back muscles work isometrically to hold the sphinx position, and the calves assist at the knee. ### Why does the Sphinx Heel Drop emphasize lowering the heels instead of lifting them? Gravity assists the descent, so the only way to make the lowering phase productive is to resist it. That eccentric control is where most of the hamstring tension in this exercise comes from. ### Is the Sphinx Heel Drop suitable for beginners? Yes, the resistance is just your lower legs, so most beginners can perform it safely. Focus on a slow heel descent and keeping the hips on the mat before worrying about reps. ### Should my feet be crossed during the Sphinx Heel Drop? Crossing the ankles is optional but helpful, because it keeps the legs moving as one unit and stops the feet from drifting apart. Switch which ankle is on top between sets to stay balanced. ### Why do my lower back and chest feel involved during this exercise? Holding yourself propped on your forearms with the chest lifted keeps the back extensors and chest muscles working the whole time. That isometric support is part of the movement, not a flaw, as long as your hips stay down. ### How many reps and sets of the Sphinx Heel Drop should I do? Two to three sets of 10 to 15 reps with a two-to-three-second lowering phase works well for most people. When that feels easy, add a top-end pause or an ankle weight instead of rushing. ### My heels keep slamming down on the mat. What am I doing wrong? Your hamstrings are fatigued or you are moving too quickly for the load. Cut the set short, slow the descent further, or reduce the rep range until you can lower the heels quietly under control. ### What can I use instead of an exercise mat for the Sphinx Heel Drop? Any padded but firm surface works, such as a folded towel or carpeted floor. Avoid very soft surfaces like a bed, which let your hips and elbows sink and throw off the position. ### Is it safe to do the Sphinx Heel Drop with knee issues? The movement loads the knee through flexion with only the weight of the lower legs, which many people tolerate well. If bending the knee under load causes pain, reduce the range or check with a qualified professional first. ### How is the Sphinx Heel Drop different from a lying leg curl? Both flex the knee against gravity, but the leg curl uses a machine pad at the Achilles while this version uses only your lower legs from a propped prone position. The sphinx hold also adds an isometric demand on the glutes, lower back, and chest that a machine does not provide.