But why do you yawn when you're not sleepy?Despite what you may have heard, yawning has nothing to do with increasing the body's oxygen supply. In experiments, subjects yawn just as much in oxygen ...

Although excessive yawning is usually attributed to being sleepy or bored, it may be a symptom of an underlying medical problem. Learn about the possible causes and treatments.

Why Do People Yawn More When They Feel Tired A tired brain is an inefficient one, and its energy levels go down. Thus, the body might resort to yawning as a weapon against fatigue.

The Sleepy Science Behind Why We Yawn. by Kaitlyn Wylde. Dec. 17, 2015. Have you ever realized how easily influenced we can be to yawn? Have you ever asked yourself why we yawn in the first place?

Pinpointing exactly why we yawn is a tough task, but the latest research suggests that our sleepy sighs help to regulate the temperature of our brains. Skip to main content.

Humans yawn almost automatically and for good reason: it signals the release These Tiny Frogs are Yawning — But Not Because They’re Sleepy Skip to main content ...

Like us, dogs sometimes just yawn when they're drowsy. If your dog yawns when he's stretching and just getting up from a nap, or when he's curling up in his bed for the night, there's a good ...

But why do you yawn when you're not sleepy?Despite what you may have heard, yawning has nothing to do with increasing the body's oxygen supply. In experiments, subjects yawn just as much in oxygen ...