Wall Sit
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An isometric "invisible chair" hold against a wall with thighs parallel to the floor, building quadriceps strength-endurance.
Detail
Stand with the back flat against a wall, then slide down and walk the feet out until the thighs are parallel to the floor and the knees are at about 90°, stacked over the ankles (not past the toes — knee-toe-relationship). Hold this static position, weight in the heels, back flat against the wall. The quadriceps work isometrically to resist knee flexion, with the gluteus-maximus and hamstrings assisting.
A simple, joint-friendly way to build quad strength-endurance and a burning finisher. Progress by increasing hold time, shifting more weight to one leg, or extending one leg straight (single-leg wall sit). Holds the knee in a fixed safe angle, making it accessible when dynamic squatting is uncomfortable.
Key facts
- Isometric hold: back on wall, thighs parallel, knees ~90° over the ankles.
- Builds quadriceps strength-endurance; weight in the heels.
- Progress with hold time, single-leg weighting, or one-leg-extended.
- Knees stay over the ankles, not past the toes.
Connections
- bodyweight-squat — the dynamic counterpart.
- squat — loaded analogue.
- tempo — time-under-tension as the progression lever.
- quadriceps — prime mover.
Educational content only — not medical advice. Always consult a qualified professional for individualized guidance, especially around injury, pregnancy, or medical conditions.