Provide a way to disable naps or delete naps. Also, fix the sleep algorithm.

Quite frequently my watch tells me I'm napping when I'm simply working at my desk or watching TV.  Also while you're at it, fix the sleep algorithm.  I can't tell you how many times it tells me I slept long enough but you only get a 50 because you slept horribly and may feel tired today.  Excuse me?!  I feel great today.