Another thing I thought of... I have, knock on wood, a very healthy body - all my severe illnesses, MH and migraines, are in my brain, not my body. I v*e*r*y rarely catch a virus or get a stomach upset. Maybe my body just needs really rough treatment, really rough long high intensity workouts. The only exception is urinary stress incontinence which interferes with running - that is a bodily problem, that is not in the brain...