I have an excellent internal clock, even while sleeping. I never set alarms because I can predict time within a few minutes after going hours without checking a clock. If I need to wake up at a particular time, I can wake up reasonably close to that time without an alarm.
I have an excellent internal clock, even while sleeping. I never set alarms because I can predict time within a few minutes after going hours without checking a clock. If I need to wake up at a particular time, I can wake up reasonably close to that time without an alarm.