Muscles worked
The band behind your knees pulls your shins back, so you can sit straight down with nearly vertical shins and an upright torso. In that position your hips cannot take over much, and your quads get most of the load. Your glutes help, but less than in an ordinary squat. Your trunk works to keep you upright as you lean into the band. The Spanish squat is often done as a static hold at a set angle, but works just as well for reps.
Common mistakes
- The anchor does not hold. A band round a light piece of furniture can slip or drag it along when you lean back. Use something heavy and fixed, such as a post or a squat rack, and test it before trusting it with your full weight.
- The band sits too high. Up on your thighs, it cannot hold your shins back and the exercise loses its point. Place it just below the crease of the knee, at the top of your calves.
- You do not trust the band. Many people lean forward to avoid losing balance, which shifts the work to the hips. Start with shallow reps until you feel the band holding you, and go deeper once you dare to sit back into it.
Variations and alternatives
- The wall sit gives your quads a similar static job when you have no band or anchor.
- The banded squat uses the band as resistance in an ordinary squat and gives your glutes more to do.
- The sissy squat also trains the quads hard without weights, but your knees travel far forward and balance is harder.
Sets and reps
As a hold, 3 to 5 sets of 20 to 45 seconds work well, at a knee angle you can manage without discomfort. For reps, use 2 to 3 sets of 10 to 15 at a calm pace. Two bands, one behind each knee, often feel more stable. For more ways to structure your sets, see the guide to sets and reps.
Make it harder by sinking deeper, holding longer or using a stiffer band that lets you lean further back. That is also progressive overload. If the front of your knee starts to hurt, stop the exercise and get it checked by a doctor or physiotherapist. Heavy, tired thighs are expected.