I have a handful of watch chargers including one at my desk and one in my laptop bag. A full day of kid activities and work around the house doesn't really see either of those though. Do I detour to top up the watch a couple times a day? Yes. Does my watch run out of juice some days? Also yes. Would a Fitbit or Garmin have this problem? No. It's a bit of a slog moving my health data out of Apple's ecosystem which is why I haven't done it yet.