>>644210But being on the balls of your feet is bad for your low back and knees because your center of gravity is farther forward, creating more force over the knee and causing the low back to arch excessively inwards in an attempt to place the center of gravity along the spine where it belongs. The top of the spine must then round to compensate for the low back curving inward, causing the shoulders to be out of alignment and weaker. Also because the force is farther forward your quads are activated more than they should be and your glutes are activated less than they should be for maximum muscle fiber recruitment.
Source: Have broken both ankles multiple times, causing center of gravity to shift over balls of feet. My whole body is going downhill fast, mainly for that reason.
The real reason for the high heel, of course, is manlets risking proper posture for a couple extra inches of height. When will they learn?