Eh, what? When watches were just watches, most everyone wore there watch while sleeping.

On that note, my brother and I were talking about these smart watches the other day and I expressed how having a gshock is nice because with my use I seem to get about 7 years of battery life, so my watch is always on. Whereas people with smart watches has (as he put it) significant time blind-spots. But he made a comment at one point and basically said something like "It's not a watch. It is a fitness device that has a clock in it". I think that is a good point. As a watch, all these actually perform rather poorly. But as fitness/GPS/communication devices they perform well.