If I understand your thesis right it’s that you believe your simple math is more likely to result in diagnosing the end of the sleep phase than the machine learning algorithms that are trained-based on the sleep lab data to extrapolate sensor data about heart rate, temperature, movement and oxygen saturation with the correct end of the sleep phase.
Generally the first sleep cycle is measured* to last between 70 and 100 minutes, and the other cycles between 90 and 110 minutes. Those ranges mean there’s some uncertainty in when each cycle actually completes for you; it varies from person to person.
It doesn’t just vary form person to person. It varies from sleep cycle to sleep cycle.
To the extend that you do notice improved sleep from what you are doing it’s likely because your ritual results in you have a clear intention about when to wake up and your body organizing to meet that intention and not because your beliefs about sleep phases match your actual sleep phases.
If I understand your thesis right it’s that you believe your simple math is more likely to result in diagnosing the end of the sleep phase than the machine learning algorithms that are trained-based on the sleep lab data to extrapolate sensor data about heart rate, temperature, movement and oxygen saturation with the correct end of the sleep phase.
It doesn’t just vary form person to person. It varies from sleep cycle to sleep cycle.
To the extend that you do notice improved sleep from what you are doing it’s likely because your ritual results in you have a clear intention about when to wake up and your body organizing to meet that intention and not because your beliefs about sleep phases match your actual sleep phases.