Not really similar but this reminded me of a recent personal experience. I visited a new gym, and usually for me, it's just a simple exercise on the treadmill to destress and get some steps done. Usually the trainer/staff in gyms will be behind counters doing their own thing but for this one, he actually approached me to find out how I was doing, and recommended to try out machines after machines. My body ached for a few days after that, in a good way, but I didn't expect a simple visit to the gym to turn into a full fledged workout.