This is because keeping the body in a standing position requires muscular effort while it reduces the blood supply to these muscles. It is the lack of blood flow that causes muscles to tire more easily and causes pain in the feet, legs, back and neck.
This is because keeping the body in a standing position requires muscular effort while it reduces the blood supply to these muscles. It is the lack of blood flow that causes muscles to tire more easily and causes pain in the feet, legs, back and neck.