Andrew Huberman· PhD
and ankles and knees have thicker spinal segments and therefore may not need quite as much buildup of the musculature around their spine in order to handle vertical loads okay compression along the spinal length because they have those big thick spinal segments and discs it's not to say that they don't need to do any spinal strengthening they do but they are generally going to be very stable along the I'm calling it the vertical axis but along the length of the spine those people perhaps not surprisingly are not going to be as Mobile in terms of the twisting and bending of the spine meaning spine Mobility along the different axes apart from that vertical axis that I was referring to along the length of the spine but twisting and bending is going to be harder for them