I always feel worse after I walk. I'm told this must be incorrect. Things have been incorrect every time so far.

dear OP: it's called drugs

Counter-example: tried to exercise, ended up doing more harm than good. Walking always made me barely able to move for a couple of days and continued trying, even once every few days, still hurt me, got worse, and I think it's responsible for how I am now (severe sciatic nerve damage).

Fuck exercise.