This afternoon I checked my activity to look at my biking map that I did earlier in the morning and noticed my Fitbit registered me doing a swimming activity for 30 minutes . I was in the pool with my kids for 90 minutes tossing them in the air, assisting when they jumped, I even jumped in a few times myself, but I did not swim laps nor set it to start a swim activity. How did it know I was in the pool and why did it register 30 minutes?
