Dare to Be Stupid

Simple steps for reproducing issue:

1. Don't go the gym for 7 weeks (hey, I was in Europe for 5 of those weeks, and hardly a couch potato, but still...)
   
2. First time back, go for the toughest kickboxing class you can find with the most mean-ass instructor.
   
3. Follow this up, back-to-back, with an intense hour of weights.
   
4. Go swing dancing for four hours the next night.
   
5. Note the following day that some tasks, such as moving, involve uncomfortable sensations.

I Dare to be Stupid.