Personal story - I used to be super sporty, 4x gym training during work week - cardio & free weights, climbing over evenings after work, hiking/climbing/ski touring over weekends. Vacations were mostly more extreme variants of the same. Last year broke my both ankles with paragliding, one leg much worse, so took me some 8 months to be able to walk straight again, with some time in wheelchair, then crutches. All strength & stamina gone, flexibility 0, so had to rebuild from scratch and I mean deep bottom scratch from which you bounce very slowly, not some 1 month stop when things come back quicker. If all above weren't my proper passions I would have a hard time coming back to being again more active than most(sans that paragliding, took the lesson and have 2 small kids). That ankle won't ever be same but so far so good, ie managed some serious hike&via ferrata mix 2 days ago.