Ahh, one of my many defects plantar fasciitis.. years ago a podiatrist sold me a boot that immobilized the foot and ankle, preventing it from relaxing and flopping forward during sleep. That motion (as it was explained to me) causes the tendon to become flaccid and “shrink” which in turn causes the pain and inflammation when the biomechanics are engaged during wakeful activity such as walking. The boot helped a bit but was a pita when waking up in the middle of the night to use the toilet. I’ve since learned that simple stretching of the tendon works a charm and am now rarely bothered by the discomfort.
