No weights, no excuses, all burn.
Keep your weight in your heels and your thighs at a true 90. Don't slide back up early.
The wall sit is pure isometric quad work. Holding a 90 degree position with your back pressed to the wall keeps the quads under constant tension with no lockout and nowhere to rest, and the burn builds by the second. It earns its place as a finisher, a knee-friendly strength builder, and one of the simplest measurable holds in training, since all you need is a wall and a timer.
Start by holding a true 90 degree position for as long as your form survives, and build from there. A shorter hold at proper depth beats a long one where your hips have crept halfway up the wall.
That is just fatigued muscle working isometrically, and it is completely normal. Breathe steadily and hold your position. Shaking is not a reason to stop, losing the 90 degrees is.
Yes. Pressing on your thighs takes load off the quads and quietly shortens the hold's value. Keep your hands off your legs, by your sides or crossed at your chest.
