Finished drywall on a Saturday and my lower back locked

https://lifestyle.us-az-culturalfoundation.com/story/211577/canada-approved-knee-osteoarthritis-implant-now-offered-in-toronto/

Finished drywall on a Saturday and my lower back locked, I told myself it would pass until week three when a massage during physio finally let me bend without stabbing pain, weird that it took that long.