Lessons learned the hard, self-induced injury way
Common denominator: going explosively all-out, like my hindbrain remembered from Muay Thai class, but with my body unprepared thanks to a 10-15 year hiatus.
In retrospect, this was more idiotic than "weekend warrior" syndrome; it was more like "high school reunion" syndrome. Joint mobility and flexibility work, deadlifts, plus kettlebell ballistics and grinds aren't the same as percussive strikes. Particularly with the highly plyometric takeoff of the Thai knee stutter step, I basically made my body tear a piece of itself off.
Major take home: don't drive faster than your guardian angel can fly. If you're older than 40 and it's been a while since you've done something, reaquaint your connective tissue (muscles, tendons, ligaments, etc) over 3-6 months and get technique down cold before going all Kill Bill.
