The sissy squat is a knee-dominant quad isolation exercise where you extend your hips instead of flexing them as you drop into a deep knee bend, leaning your torso back while your heels rise off the floor. That combination hits the rectus femoris harder than almost any other quad exercise, since it’s the one head of your quads that crosses both your hip and knee joints, and stretching it at the hip while bending it hard at the knee is exactly what builds that “teardrop” look above your kneecap. Most people do it holding onto a rack or a TRX strap for balance, or on a dedicated sissy squat bench if their gym has one.
You might want a swap for a few reasons. That deep knee bend under a backward lean puts real stress on your patellar tendon right at the bottom, and if your knees already bother you, a sissy squat can make that worse before it makes your quads bigger. The balance alone trips most people up.
It takes weeks to learn to control the lean without a strap to hold onto, and most commercial gyms don’t own a sissy squat bench, so you’re stuck rigging something with a rack or a pair of rings. Or maybe you’ve built the pattern already and want more ways to load your quads once bodyweight reps stop being hard.
I picked the 8 alternatives below for how well they load your quads through a deep knee bend without needing sissy squat-specific gear, and for how much control you have over the range and the load. If your knees ache in that extreme flexed position, ease into range gradually on any of these and back off the ones that spike pain instead of pushing through it. Here’s how I’d rank them and how to run each one.
Table of Contents
- 1 The 8 Best Sissy Squat Alternatives
- 2 Reasons to Choose a Sissy Squat Alternative
- 3 Muscles Worked by the Sissy Squat
- 4 FAQs
- 4.1 What’s the closest alternative to a sissy squat?
- 4.2 Can I build quad size without sissy squats?
- 4.3 What’s the best sissy squat alternative for bad knees?
- 4.4 What’s the best sissy squat alternative at home?
- 4.5 Why do sissy squats hurt my knees?
- 4.6 How many quad isolation exercises should I do per workout?
- 5 Key Takeaways
- 6 Other Alternative Exercises
- 6.1 The 9 Best T-Bar Row Alternatives
- 6.2 The 10 Best Overhead Press Alternatives
- 6.3 The 10 Best Hack Squat Alternatives
- 6.4 The 10 Best Plank Alternatives
- 6.5 The 10 Best Lying Leg Curl Alternatives
- 6.6 The 9 Best Leg Press Alternatives
- 6.7 The 9 Best Barbell Row Alternatives
- 6.8 The 10 Best Bench Press Alternatives
- 6.9 The 8 Best Decline Bench Press Alternatives
- 6.10 The 9 Best Lunge Alternatives
- 6.11 The 8 Best Ab Rollout Alternatives
- 6.12 The 10 Best Romanian Deadlift Alternatives
- 6.13 The 8 Best Incline Bench Press Alternative
- 6.14 The 10 Best Bent Over Row Alternatives
- 6.15 The 10 Best Box Jump Alternatives
The 8 Best Sissy Squat Alternatives
- Reverse Nordic Curl
- Spanish Squat
- Leg Extension
- Cyclist (Heel-Elevated) Squat
- Hack Squat
- Front Squat
- Goblet Squat
- Leg Press
1. Reverse Nordic Curl
When to Perform Reverse Nordic Curls
This is the closest thing to a sissy squat on the list. Your hips extend while your knees bend deep, same as the lift it’s replacing, just from a kneeling position instead of standing on your feet. Use it when you want the exact same rectus femoris stretch a sissy squat gives you but with a floor under your knees for more stability while you learn to control the lean.
I program it for 3 sets of 6 to 10 reps, and I’d start with a shorter range of motion for your first couple of sessions until your quads adapt to the eccentric load.
How to Perform Reverse Nordic Curls
- Kneel on a pad or folded mat with your hips fully extended and your body in a straight line from your knees to your head.
- Point your toes so the tops of your feet rest flat on the floor.
- Keeping your hips locked in that extended position, lean your torso back as far as you can by bending only at the knees.
- Once your quads reach their limit, pull yourself back up to the starting position under control.
Equipment: none, though a folded mat or towel under your knees helps.
This video from Reload Physical Therapy and Fitness shows how to set up and perform the reverse Nordic curl.
Tips for Reverse Nordic Curls
- Keep your hips extended the entire rep. If they fold forward, you turn this into a hip hinge instead of a knee-dominant exercise.
- Only lean back as far as you can control. Stopping the range short beats collapsing and falling backward.
- Hold onto a band anchored in front of you, or have a partner brace your feet, until your balance and quad strength catch up.
- Squeeze your glutes throughout the rep to keep your hips locked and take some load off your lower back.
2. Spanish Squat
When to Perform Spanish Squats
Reach for this one when your knees are the whole reason you’re looking for a sissy squat swap. Physical therapists prescribe the Spanish squat specifically because a band anchored behind your knees lets you squat deep and load your quads hard while keeping your shins close to vertical, so there’s a lot less shear force on your patellar tendon than a sissy squat produces. I run it for 3 to 4 sets of 10 to 15 reps, sometimes with a 2 to 3 second pause at the bottom to really load the quads under tension.
How to Perform Spanish Squats
- Loop a long resistance band around a squat rack at roughly knee height, then step into the loop so it sits behind both knees.
- Walk back until the band is taut and your feet are shoulder-width apart.
- Sit down and back like you’re dropping into a chair, keeping your shins as close to vertical as you can while the band pulls your knees back.
- Push through your feet to stand back up, keeping tension on the band the whole rep.
Equipment: a long resistance band and a rack or sturdy anchor point (some gyms have a dedicated Spanish squat strap).
This video from E3 Rehab shows how to set up and perform the Spanish squat.
Tips for Spanish Squats
- Keep your torso upright instead of leaning forward, which is what shifts the load onto your quads instead of your hips.
- Use a thicker band for more tension if a lighter one lets your knees drift too far forward.
- Pause at the bottom for a slow 2 count before standing up if your goal is quad size over pure endurance.
- Bodyweight is plenty to start. Add a dumbbell held at your chest once bodyweight reps stop being hard past 15.
3. Leg Extension
When to Perform Leg Extensions
This is the simplest true isolation swap. A leg extension machine trains the same muscle group a sissy squat does, straightening your knee against resistance, without any of the balance demand or the hip-extended lean that stresses your patellar tendon. I use it as a finisher after a heavier compound lift for 3 sets of 12 to 15 reps, or as the main quad isolation exercise on days I want to keep my knees fresh.
How to Perform Leg Extensions
- Sit in the machine with your back against the pad and the ankle pad resting just above your feet.
- Adjust the seat so your knees line up with the machine’s pivot point.
- Extend your knees to lift the pad until your legs are straight, squeezing your quads at the top.
- Lower the weight back down under control until your knees reach roughly 90 degrees.
Equipment: leg extension machine.
This video from ScottHermanFitness shows how to perform the leg extension.
Tips for Leg Extensions
- Don’t slam the weight stack down between reps. Lower it under control so your knees get the eccentric load too.
- Point your toes slightly out or in between sets to shift some emphasis between the inner and outer quad.
- Add a 1 to 2 second squeeze at the top of each rep for a harder peak contraction.
- If your gym’s machine has a range limiter, use it. Stopping a little short of full lockout keeps constant tension on the muscle instead of resting the joint at the top.
If your gym doesn’t have one, our leg extension alternatives guide covers other ways to isolate the same muscles, and our leg extension benefits and muscles worked page breaks down exactly what this exercise trains.
4. Cyclist (Heel-Elevated) Squat
When to Perform Cyclist Squats
Use this when you want a real squat pattern that still leans hard on your quads the way a sissy squat does. Propping your heels up on a pair of plates lets your knees travel further forward and keeps your torso upright through a narrow stance, so more of the work lands on your quads instead of your hips and hamstrings. It’s a good main quad exercise for 3 sets of 10 to 15 reps, and it scales easily from bodyweight up to a loaded dumbbell or barbell once bodyweight gets easy.
How to Perform Cyclist Squats
- Set two weight plates or a wedge on the floor and stand on them with your heels, keeping your toes on the ground.
- Take a narrow stance, feet close together or just a few inches apart.
- Squat straight down, letting your knees travel forward over your toes while your torso stays upright.
- Drive through your whole foot to stand back up, keeping your heels planted on the plates the entire rep.
Equipment: two weight plates or a wedge to elevate your heels (a dumbbell held at your chest once bodyweight reps get easy).
This video from E3 Rehab Exercise Library shows how to perform the heel-elevated bodyweight squat.
Tips for Cyclist Squats
- Keep your torso as vertical as you can through the whole rep. Leaning forward hands work to your hips instead of your quads.
- Go as deep as your knees comfortably allow. There’s no need to force a rock-bottom squat if your knees complain before you get there.
- Start with a lower heel wedge and raise it over a few sessions as your ankles get used to the position.
- Hold a single dumbbell vertically at your chest once bodyweight reps stop being a challenge past 15.
5. Hack Squat
When to Perform Hack Squats
Once bodyweight quad work stops being enough, the hack squat machine is where I send people to add real load. The fixed sled path keeps your torso supported so your quads take on the brunt of the work without your lower back getting involved, and you can load it far heavier than you’ll ever load a sissy squat. I program this for 3 to 4 sets of 8 to 12 reps as a main quad lift, usually earlier in a leg session while you’ve still got the most strength in the tank.
How to Perform Hack Squats
- Set your shoulders and back against the pads with your feet on the platform, roughly shoulder-width apart and set slightly forward.
- Release the safety handles and let the sled travel down as you bend your knees.
- Lower until your thighs are at least parallel to the platform, keeping your heels flat.
- Press through your whole foot to extend your knees and drive the sled back up.
Equipment: hack squat machine.
This video from Humber College Athletics and Fitness shows how to use the hack squat machine.
Tips for Hack Squats
- Set your feet a little lower and closer together on the platform for more quad emphasis, higher and wider shifts more work to your glutes and hamstrings.
- Keep your heels flat through the whole rep. If they lift, you’re going deeper than your ankle mobility allows.
- Don’t lock your knees out hard at the top. A soft lockout keeps tension on your quads instead of resting on your joints.
- Re-rack the safety handles before you load or unload plates.
Want other ways to load your quads this heavy? See our hack squat alternative guide.
6. Front Squat
When to Perform Front Squats
This is the heaviest, most technical option on the list, and I’d only send an experienced lifter here. Racking the bar across the front of your shoulders forces your torso to stay upright through the whole squat, which loads your quads far more than a low-bar back squat does. It’s a serious strength builder in its own right, so I program it for 3 to 5 sets of 5 to 8 reps as a main lift, early in the session while you’ve still got the technique and focus to handle it.
How to Perform Front Squats
- Rack the bar across the front of your shoulders, either with a clean grip or crossed arms, elbows pointed up.
- Unrack the bar and step back, setting your feet shoulder-width apart.
- Squat down by bending your hips and knees together, keeping your elbows high and your torso upright.
- Drive through your whole foot to stand back up, keeping the bar over the middle of your foot the whole rep.
Equipment: barbell and a rack.
This video from ScottHermanFitness shows how to perform the barbell front squat.
Tips for Front Squats
- Keep your elbows up throughout the rep. If they drop, the bar rolls off your shoulders.
- Expect to load less than your back squat, since your upper back and core become the limiting factor before your legs do.
- Work on your wrist and shoulder mobility off the bar if the clean grip bothers your wrists. Crossed arms is a fine substitute.
- Keep the bar over your midfoot the entire rep instead of letting it drift toward your toes.
For a full breakdown of what this lift trains, see our front squat benefits and muscles worked guide.
7. Goblet Squat
When to Perform Goblet Squats
This is the option I’d start a beginner on. Holding a single dumbbell or kettlebell at your chest keeps your torso upright the same way a front squat does, without needing a bar, a rack, or any real technique work to get started. I run it for 3 sets of 10 to 12 reps, either as a main quad lift for a newer lifter or as a warm-up pattern before a heavier barbell squat.
How to Perform Goblet Squats
- Hold a dumbbell or kettlebell vertically against your chest, cupping the top end with both hands.
- Stand with your feet shoulder-width apart, toes turned out slightly.
- Squat down, letting your elbows travel between your knees as you drop, keeping your torso upright.
- Drive through your feet to stand back up, keeping the weight close to your chest the whole rep.
Equipment: one dumbbell or kettlebell.
This video from ScottHermanFitness shows how to perform the goblet squat.
Tips for Goblet Squats
- Keep the weight tight against your chest. Letting it drift away pulls you forward and off balance.
- Squat as deep as your mobility allows. The dumbbell in front counterbalances you, so most people can go deeper here than in a back squat.
- Pause for a second at the bottom on a few reps each set to build comfort in that deep position.
- Once a dumbbell stops feeling heavy, move up to a front squat or hack squat instead of trying to hold something awkward and heavy at your chest.
8. Leg Press
When to Perform the Leg Press
Use the leg press when you want to load your quads heavy without asking your balance, your lower back, or your core to do any stabilizing work at all. Setting your feet low and close together on the platform shifts most of the work onto your quads, which is the closest this machine gets to what a sissy squat trains. I run it for 3 to 4 sets of 10 to 15 reps, usually after a heavier compound lift like a front squat or hack squat.
How to Perform the Leg Press
- Sit in the machine with your back flat against the pad and your feet on the platform, set low and close together.
- Release the safety handles and lower the platform by bending your knees toward your chest.
- Lower until your knees reach close to 90 degrees, or as deep as you can go without your lower back rounding off the pad.
- Press through your whole foot to extend your knees and push the platform back up, stopping short of locking your knees out hard.
Equipment: leg press machine.
This video from ScottHermanFitness shows how to perform the leg press.
Tips for the Leg Press
- Keep your lower back flat against the pad the entire rep. If it lifts off at the bottom, you’ve gone deeper than your hips allow.
- Feet low and narrow biases your quads, feet high and wide shifts more work to your glutes and hamstrings.
- Never let the safety handles go unlocked while you’re loading or unloading plates.
- Don’t slam your knees straight at the top. Stop a couple of degrees short to keep the tension on your quads.
If your gym’s leg press is always taken, our leg press alternatives guide has other heavy-loading options.
Reasons to Choose a Sissy Squat Alternative
There’s no downgrade in the list above. Every one of these loads your quads hard, and a few of them let you push far more weight than a sissy squat ever will.
Most gyms are stocked with the machines these alternatives need too. Check out our leg machines guide for a full rundown of what’s usually on the floor.
- Your knees ache in deep flexion. The Spanish squat and leg extension load your quads hard without the shear force a sissy squat puts on your patellar tendon at the bottom.
- You can’t balance a sissy squat yet. The reverse Nordic curl gives you the same hip-extended stretch with your knees planted on the floor instead of your feet balancing your whole bodyweight.
- Your gym doesn’t have a sissy squat bench. Every alternative here uses equipment most commercial gyms already have.
- You want to add real load. The hack squat, front squat, and leg press let you pile on weight in a way a bodyweight sissy squat never will.
- You’re newer to training. The goblet squat and cyclist squat teach the same upright, quad-dominant pattern without the technique demands of a sissy squat.
Muscles Worked by the Sissy Squat
Your quadriceps are made up of four muscles, and the sissy squat trains all of them, but the hip-extended, deep knee bend position is what makes it so good at hitting the rectus femoris specifically. That’s the one head that crosses your hip joint as well as your knee, so stretching it at the hip while bending it hard at the knee loads it in a way most quad exercises don’t.
- Rectus femoris: the primary target, stretched hardest by the combination of hip extension and deep knee flexion. This is the muscle that gives your quads that teardrop shape above the knee.
- Vastus medialis: the teardrop-shaped muscle on the inside of your knee, worked hard through the deep flexed range on every exercise on this list.
- Vastus lateralis: the largest of the four quad muscles, on the outside of your thigh, loaded on every squat and press variation here.
- Vastus intermedius: sits underneath the rectus femoris and works on every knee extension, though you can’t isolate it directly.
- Gluteus maximus: gets real secondary work on the front squat, hack squat, and leg press, especially with a wider or higher foot placement.
- Adductors: stabilize your knees on the narrow-stance cyclist squat and Spanish squat, and assist with hip extension on the reverse Nordic curl.
FAQs
What’s the closest alternative to a sissy squat?
The reverse Nordic curl. It’s the only exercise on this list that puts your hips in the same extended position a sissy squat uses while your knees bend deep, so the stretch on your rectus femoris feels almost identical. The main difference is you’re kneeling instead of standing on your feet, which makes it easier to control while you build up strength and range.
Can I build quad size without sissy squats?
Yes. Your quads grow from progressive overload through a real range of motion, and none of the exercises above need a sissy squat’s exact hip position to get there. A leg extension, a hack squat, or a leg press will build just as much quad size over time if you train it hard and add weight or reps consistently.
What’s the best sissy squat alternative for bad knees?
The Spanish squat and the leg extension are usually the friendliest options. The band on a Spanish squat keeps your shins closer to vertical, which cuts down on the shear force at your knee, and a leg extension machine lets you control the exact range you work through. If a specific exercise causes pain, shorten the range first before you drop the weight.
What’s the best sissy squat alternative at home?
The reverse Nordic curl if you have no equipment at all, and the cyclist squat or goblet squat if you’ve got a couple of plates or a single dumbbell. Between the three, you can train the same knee-dominant quad pattern a sissy squat trains without ever leaving your living room.
Why do sissy squats hurt my knees?
Usually it’s the deep knee flexion combined with your bodyweight loaded right at end range, which puts heavy stress on your patellar tendon in a position most people haven’t trained before. If you feel pain there, cut the range short instead of forcing full depth, or switch to a Spanish squat or leg extension until your knees adapt to the position.
How many quad isolation exercises should I do per workout?
One or two is plenty on a day where you’re already squatting or leg pressing, since a compound lift trains your quads hard before you ever get to isolation work. On a dedicated leg day, pairing a compound option like the hack squat or front squat with a true isolation exercise like the leg extension covers the muscle well without piling on junk volume.
Key Takeaways
If you want the closest match to a sissy squat’s stretch and knee position, start with the reverse Nordic curl. If your knees are the reason you’re looking for a swap in the first place, the Spanish squat or leg extension are the safest places to start.
Once you’re ready to add real load, the hack squat and front squat will build more quad size and strength than a bodyweight sissy squat ever could. Pick two or three of these based on your equipment and how your knees feel, and progress them the same way you’d progress a sissy squat: more range, more reps, then more weight, in that order.
Other Alternative Exercises
If you enjoyed this post, check out our other roundups of the best alternatives for other exercises.
