https://www.discovermagazine.com/health/why-do-i-feel-better-when-i-wake-myself-up-instead-of-an-alarm

We’ve all experienced this: You’re in the middle of a lovely dream. Perhaps you’re flying. As you’re soaring through the air, you meet an eagle. The eagle looks at you, opens its beak, and – BEEP! BEEP! BEEP!
Your alarm goes off. Dream over, time to get up.
Many people – kids and adults alike – notice that when they wake up naturally from sleep, they feel more alert than if an alarm or another person, like a parent, wakes them up. Why is that?

science

>https://www.discovermagazine.com/health/why-do-i-feel-better-when-i-wake-myself-up-instead-of-an-alarm

>We’ve all experienced this: You’re in the middle of a lovely dream. Perhaps you’re flying. As you’re soaring through the air, you meet an eagle. The eagle looks at you, opens its beak, and – BEEP! BEEP! BEEP!
Your alarm goes off. Dream over, time to get up.
Many people – kids and adults alike – notice that when they wake up naturally from sleep, they feel more alert than if an alarm or another person, like a parent, wakes them up. Why is that?