Not me when I had my first back problem. I was in my 20's and never fitter but I was under extreme stress and that tenses all your muscles. You must know the phrase "God protects drunks" when applied to car accidents. If you tense up before the collision, your injuries are likely to be more severe than a drunk's because they don't anticipate, tense up and then absorb the energy of the crash as a "stiffened" system.
At least that's what the EMT's explained to me when they hauled out drunks from crushed cars with no injuries but pulled sober people from uncrushed cars with serious musculoskeletal injury. I'm certainly willing to be disabused of that belief except for the fact that my "degenerate" disks act up when I am over-extending myself with too much to do or worry about. I start to break out in small muscle spasms my wife calls "egg yolks" because that's there size and shape. She can massage them away - sometimes - but they often presage that horrible feeling that I just took an arrow in my lower back.
(Oddly enough thinking about that brought back memories of the first multiple fatality accident I covered as a rookie police reporter and the drunken, unscathed driver of the "murder car" coming up to me, reeking of alcohol, begging me (not sure why) to forgive him. I have never felt more contempt for a fellow human being in my entire life. Only one infant survived because she had been thrown into the area behind the driver's seat, one of the last places to crumple in a catastrophic accident.
Even the state trooper who responded (a rookie too) was overwhelmed by the carnage and retched after ascertaining there were no life signs among the victims. He had to look in the car. I didn't. For which I am eternally thankful. It took the EMTs to find the little girl who never made a peep, oddly enough. Thank God they were so thorough in removing the victim's bodies and searching the car. That memory of how disgusted I was with that drunk driver is causing my back to tense up. Darn you Norminn! )
Lack of a good night's sleep from stress is all it takes for some people with previous back problems to have a recurrence, IMHO. At least, BTDT! (-: