Primary
Quadriceps
Secondary
Hip flexors
Equipment
Box
Difficulty
Intermediate
Type
Squat
See how Sissy Squat to Box could fit a workout
The example below shows one possible placement. Your purchased plan is built from your assessment, and Ely checks every exercise before approving it.
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This page is not medical advice or a rehabilitation protocol. Ely's personal review applies to purchased workout plans and does not replace an in-person assessment by a licensed healthcare professional.
The sissy squat to box uses a box behind you as a depth target and safety net, making the challenging sissy squat movement more accessible. The box catches you at your end range so you can build confidence and strength before progressing to full range sissy squats. Adjust box height to match your current ability level.
When to use it
Use as a sissy squat progression.
Who it's for
Those building up to full sissy squats.
Touch the box but do not sit on it—this is a depth marker, not a resting point. Keep your hips extended throughout and let only your knees bend. Lower the box height as you get stronger to progressively increase range of motion.
Browse all quadriceps exercises
Also targets: hip flexors
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Stand in front of a box or bench.
Rise up on your toes.
Lean back while bending your knees.
Keep your hips extended in a straight line.
Lower until you touch the box behind you.
Use your quads to drive back to standing.
The box provides a depth target.
Adjust box height for difficulty.
Keep hips extended throughout.
Great progression for full sissy squat.
For general fitness, start Sissy Squat to Box with 1-2 light, controlled sets and increase only when the movement remains comfortable. This is not rehabilitation dosage; use the frequency and progression given by your licensed healthcare professional for an injury or surgery.
Sitting back on the box.
Changing your back position during the Sissy Squat to Box can alter the movement and make the load harder to control. Brace your midsection and keep the torso position called for by the exercise.
Bending at the hips.
Losing hip position during the Sissy Squat to Box changes the loading pattern and can reduce the intended work for your Quadriceps. Keep your hips aligned with the setup cues and move only through the range you can control.
Not controlling the descent.
Squatting patterns like the Sissy Squat to Box coordinate the hips, knees, and feet. Keep those positions consistent and use a range you can control while your Quadriceps carries the intended load.
Using arms for assistance.
Your foot position during the Sissy Squat to Box determines how force transfers through your body. Keep your feet flat with weight distributed evenly — losing contact with the ground means you're losing power and stability.
Those building up to full sissy squats.
Lower reps with heavier weight builds raw strength. Your muscles and nervous system adapt to handle more load over time. This range is best for strength-focused goals.
This rep range keeps your muscles under tension long enough to trigger growth. Most people see the best muscle-building results in this zone. It balances strength and muscle size.
Higher reps with lighter weight builds muscular endurance and improves conditioning. This range is good for joint health and building work capacity.
General guideline: 3-4 sets of 8-12 reps. Rest 90s.
This is one example of how Sissy Squat to Box could sit inside a complete workout. Your plan may use different movements after Ely checks your assessment.
Sample workout
MySetPlan guides you set by set, times your rest, records your work, and tells you what to do next from the plan Ely approved.
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Frequently Asked Questions About the Sissy Squat to Box
The Sissy Squat to Box primarily targets the Quadriceps, making it an effective exercise for quadriceps development. Secondary muscles worked during the Sissy Squat to Box include Hip flexors, providing additional training stimulus. Stabilizer muscles engaged include Core, Calves.
The Sissy Squat to Box is rated as intermediate difficulty, meaning it requires some training experience. Those building up to full sissy squats. Focus on proper technique and consider starting with easier variations.
For the Sissy Squat to Box, the recommended approach depends on your goals. 3-4 sets of 8-12 reps. Rest 90s. For strength, use 6-8 reps. For muscle growth, perform 8-12 reps. For endurance, complete 12-15 reps.
The Sissy Squat to Box typically requires a box, which most home gyms don't have. For a home-friendly alternative targeting the same muscles, check the variations section above.
Good alternatives to the Sissy Squat to Box include: Sissy Squat, Leg Extension. These exercises target similar muscle groups as the Sissy Squat to Box and can be used as substitutes based on your equipment availability, gym setup, or training preferences.