Environments that necessitate constant movement and varied postures, like those of women in ancestral communities carrying loads, prevent the development of chronic pain and stiffness.

“her environment necessitated that she never had the opportunity to sit on a chair for 12 hours a day you know she never had the the opportunity to have raised heeled shoes that she's walking around you know she never had the opportunity to augment the function of her her visual system and be staring into being inside of a room where you can't see more than you know 10 to 15 feet at a time”