On drywall day I felt a pop in my lower back lifting a cabinet

https://telegra.ph/From-Crutches-to-Confidence-Sports-Medicine-Toronto-Knee-Rehab-in-the-First-Weeks-07-29-2

On drywall day I felt a pop in my lower back lifting a cabinet, I kept going and skipped massage initially, then the third visit gave me the first pain-free bend.