"You know you really don't have to exercise at all" (wink, wink)

Exercise may be possibly 1 of the top 2 therapies regarding the management and improvement of mental afflictions like

depersonalization, derealization, schizophrenia, & dissociative identity disorder.

(Exercise helps improve schizophrenia symptoms) - https://www.psychologytoday.com/us/blog/the-athletes-way/201608/3-ways-aerobic-exercise-improves-schizophrenia-symptoms