Yeah, I do. I don't set an alarm, I just get up when I wake up. Sometimes I wake up at 4:00 instead of 7:00, the watch tells me to go back to sleep. No way would I use a phone for that - I set it on silent in case a group chat blows up in the middle of the night, but if I saw the notifications I'd have to check them. At 4am. Ugh.

No(t only). People wear traditional watches to bed because they have waterproof watches and couldn't be bothered with taking them off, and don't set their strap/bracelet too tight.