I am using an app on my phone that measures my sleeping phase and tries to wake me up from sleep at the best possible time within predefined period (30 minutes). I (in general) sleep 7 hours a day, and I use 30 minutes wake up phase, which suppose to wake me up at the best time within this 30 minute period.
My questions is:
Is it better to use intelligent wake up phase and being awakened by my phone(at the worse scenario) 30 minutes before I would wake up otherwise, or to sleep 30 minutes more, and risk that I will be woken up from deep sleep by the alarm?
Thank you for any suggestion.