Title says it all…
In: 7
Oxygen helps you stay awake. Yawning is a way of getting a quick blast of oxygen to stave off falling asleep.
Why do all the animals including humans yawn? Especially while sleepy or while walking up after one.
Share & grow the world's knowledge!
Title says it all…
In: 7
Oxygen helps you stay awake. Yawning is a way of getting a quick blast of oxygen to stave off falling asleep.
Latest Answers