The wall sit is a bit different from typical squats since you're holding a static or
isometric position for a certain period of time, rather than working through an entire range of motion.
Then you can try and launch the
same isometric position without the # 7000 vibrating surface and you will get some lactic acid accumulated in muscles engaged and will burn some calories.
Static stretching focuses
on isometric positions to lengthen muscles, and is best at night or as a general anytime cool down.
This forces your body to engage your stabilizing muscles even more to hold
the isometric position and resist the urge to drop your hips.
Instead, the biceps are supporting the weight in
an isometric position, which is possibly pissing off your tendons at the front side of the shoulders instead.
In addition to acting as a neuroplasticity drill (defined in the first blog), this exercise also serves as a «talk test» to ensure proper breathing while maintaining
an isometric position of stability.