Low back pain is the most common mechanical type of pain in all of North America. Low back pain symptoms usually cause stiffness, aches, and generalized fatigue, but there are many different reasons why you can get these symptoms.
Are You a "Self Crack" Addict?
During my undergrad at Wilfrid Laurier, I would study in the quiet floor of the library. It was dead quiet up there even though there were hundreds of students cramming for midterms and finals.
The only sounds I would hear was someone opening a drink, clearing their throat and cracking their own necks and back.