It’s not entirely physiological. It is also very much a psychological phenomenon as well. For example, seeing someone else yawn is more likely to make you yawn. Hell, talking about yawning is more likely to make you yawn. In fact, if you’ve spent any time in this thread, you’ve likely yawned already.
I was told it’s due to your brain needing more oxygen?
Wonder if its related to physicological sigh
It’s not entirely physiological. It is also very much a psychological phenomenon as well. For example, seeing someone else yawn is more likely to make you yawn. Hell, talking about yawning is more likely to make you yawn. In fact, if you’ve spent any time in this thread, you’ve likely yawned already.