Leg extensions and wall sits: target your quads

What this exercise trains

These movements focus on the quadriceps, the muscles that straighten the knee. Leg extensions do this directly at a machine, while sissy squats and wall sits use different body positions to challenge the same region.

They can add thigh work after a broader leg exercise. A machine makes load changes straightforward, a wall sit needs little equipment, and a sissy squat offers a more demanding bodyweight lever. Choose the version whose range and resistance you can control comfortably.

Leg Extension

The machine fixes the thigh while the lower leg moves against a pad, reducing the need to balance or extend the hips. This makes it practical for targeted thigh work. Align the machine and knee carefully and keep its settings consistent.

1. Adjust the seat so your knees line up with the machine pivot and the pad rests above your ankles.
2. Straighten your knees smoothly, keeping your hips seated, then lower without letting the weight stack slam.

Technique points to remember

For leg extensions, align the pivot near the knee and place the pad on the lower shin. If your hips lift during extension, reduce load and recheck the seat.

Start easier, progress deliberately

Use a controlled lift and return rather than kicking. For sissy-squat versions, hand support and less depth make the movement easier to dose.

Where this exercise fits in your workout

After squats, start with a few extra leg-extension sets or wall sits. Keep that amount steady at first so you can feel how the extra work affects your next leg session.

Warm up with easier sets before these working sets.

Sissy Squat

Keeping the hips relatively extended while the knees bend creates a demanding bodyweight lever for the front thighs. It is an advanced option rather than an automatic beginner exercise. Holding support and reducing the lean let you explore a manageable range.

1. Practice this demanding knee-dominant variation with firm hand support and a shallow range first.
2. Rise onto your forefeet, bend knees forward and lean your body backward while keeping hips extended; return slowly without forcing depth or adding load early.

Wall Sit

The wall supports the back while the legs hold a bent-knee position. It provides a simple timed exercise with little equipment. The training is specific to a held position, so it complements moving squats rather than practising their full up-and-down pattern.

1. Lean your back against a solid wall and walk your feet forward.
2. Slide down to a comfortable knee bend and hold while breathing normally; keep feet planted, knees aligned with toes and slide upward to finish.