Have you ever noticed that anytime someone yawns, within a matter of seconds you end up yawning yourself? Why does that happen?
It used to be believed, and you've probably heard this, that the reason you yawn is to get more oxygen. However, back in 1987 a study revealed that there is no correlation with yawning and oxygen deprivation.
Today the main theory is that it is for a little kick start.
Dr Reyan Saghir, an academic surgeon, said, "As we become tired, especially when viewing uninteresting or non-interactive repetitive stimuli like a lecture, our body yawns as a means to 'wake up'.
Ok so why do we yawn when someone else yawns? The reason seems to be empathy.
Dr Saghir said, quote, "As humans age, we enhance our psychosocial and neurological development, taking other individuals yawning as a cue that we should yawn as well."