For Stand, go to Activity and check off Stand Reminder. (If you just don’t want to know anything just check off everything in there including Allow Notifications)
For Breath go to Breath and check off Allow Notifications.
I bought the AW to screen calls, emails and texts without needing my phone. I have zero interest in the fitness or health monitoring ability of my AW but would love to be able to side load audiobooks without resorting to third party apps.