Post hauling stone from Home Depot my lower back tightened badly

https://shannonkingstonsoil.yousher.com/from-walker-to-cane-first-weeks-of-post-surgical-knee-physio-in-toronto

Following hauling stone from Home Depot my lower back tightened badly, I tried rest and stretches, then the third massage during physio actually let me move like a functioning adult again.