For the past 14 months my FitBit reports roughly 25,000 steps per day. Roughly 80 miles a week. Up and down the long hallway in my house. Day by day, week by week, etc. Almost unfailingly.
Then, about a month ago, the walking got harder. I explained it with more work. Butt in seat in front of computer = no steps. Work stress. Life stress. Hotter days. Anything and everything explained the decline.
Ten days ago everything got slow. Really slow! My metabolism shut down and I gained six pounds in about three days. Stopped sleeping the 7+ hours to which I had become accustomed. The fuse got short, too, and some good people