The answer is one mystery that still remains unsolved is why we yawn.
and another theory is that when you yawn it sends oxygen to the brain causing your body to be able to stay awake, hence when you are tired and need to stay awake you yawn a lot.
Legends are made up things like rumors basically! Well the easier way to put it is that a Legened is basically a Myth! :D
(Picture above to help)
The synonyms help a lot! you can pick any :D I recommended on Myth.
Hope this helps!
SIMILE IS THE ANSWER! I think at least I did the same thing! but I cant get the exact answer