When you go down with the sun with as little artificial light as possible and get daylight as close to waking up as possible, after a while you naturally begin to wake up without needing an alarm, rested... 🤷🏻‍♀️

I don't know that might be my privileged ass talking that's had the luxury to do plenty of sleeping in and mostly not use an alarm 99.999999 % of the time in the last 23 years.