Zenwatch seems to vibrate for no reason topic

Hello, Second day of ownership and I am already having an issue. The watch vibrates, I check it for a notification, nothing there. Awhile later, vibrates again, no notification. Sometimes there is a notification it got from the phone, but 90% of the time it seems to be vibrating for no reason.

I tried to wear it to bed last night but the incessant vibrations were annoying.

Even if it was vibrating when I got a notification,is there a way to tell it not to vibrate for certain hours?

Thanks