I used to laugh at people that wear their watches to bed, shower, swim etc - talking about conventional watches right now, especially durable ones like Casios F-91W or G-shocks, thought it was like showing off.
However once I've tried wearing my AW7 to bed, I'm stuck with it now! It was an eye opener - I have a job that requires staying up late and doing stuff, quite often, actually, so I never really had a sleep routine. I was shocked to find out that often, because of insufficient time and also the time required to fall asleep, or me awaking at night, I rarely reach even six hours of sleep. Thanks to AW I now have set-up a sleep routine and try to follow it.
I usually charge my watch twice these days, once in the morning, once at night before going to bed. Thanks to fast charging it's not a problem, however I would like to complain about the battery life. I used to be able to go the whole day + the night on a single charge, with like 10% of charge to spare. Now I often don't even have the minimum 30% of battery by evening to go into the sleep mode. Either my unit is defective, or the software updates are to blame (my battery also deteriorated to 93% of capacity after only 7 1/2 months).