Question

Whenever we feel drowsy or sleepy we start yawning. Does yawning help us anyway??

Answer 1

Yes, Yawning help us.

When our brain did not gets enough oxygen to breakdown energy, it sends a signal to our body that we need so much oxygen, and we yawn to take more n more oxygen.

When someone yawns we also yawn by seeing,

that is because our brain thinks that we also need energy.

Thank you! ❤