What to stop: Something with too much flexibility in the only real. Not merely does this generally translate to fewer arch support, Fishkin claims it could produce instability, forcing your foot to work tougher to stay set up. The additional pressure can result in a tighter, more irritated plantar fascia.   https://www.theorthopaedicandpainpractice.com/treating-foot-arch-pain-with-modern-orthopaedic-pain-management-techniques/