yesterday I was feeling just fine, hanging out with friends and enjoing the nice weather outside. came home had somthing to eat and all of a sudden my neck and body got all stiff and felt like my brain was just not right. very hard to socialise and anxious feeling too. i've been havng this problem for years where i'm all fine, then go outside do something that's maybe a little straining on the body, but not too much, and after a short period of resting the PEM sets in. if there's one thing i've noticed over the years this feeling of PEM always goes along with a very stiff neck and some feeling like my brain is infected or just not right. hard to describe. it feels more mental than physical in that way I guess. just wondering if anyone could relate ? btw one good days I could do a decent amount of physical straining on the body and be fine. so it feels very random. now i'm stuck at home again cause I feel too confused and unfocused to go outside. btw these problems started getting worse after seeing a chiropractor about 5 or 6 years ago. so the neck cracking thing always stuck with me like something that could be important.