Need to run

Friday: a visit to the gym, needfully quick as after a day's client work at the PC, I had to get shopping and be back for a rehearsal for church choir in the evening. Figured that if I did just warmup and weights, it would take me an hour. Feeling a bit "scratchy" (our household shorthand for out-of-sorts, or perhaps cranky); wanted to run it out of my system. Did just fifteen minutes on treadmill, then rest of the routine. I was nearly not late for rehearsal... did they tell me that this exercise lark is as addictive as any drug??