Here`s something interesting I found when doing net research.

Why do people stick their tongue out when they're concentrating on a fiddly task?

I have a crackpot theory: biting on the tongue inhibits speech, and temporarily turns off whatever concentration might normally be reserved for language.

Does anyone have a better explanation?
5 Answers

redunicorn@s...
3 months ago

Report Abuse

Best Answer - Chosen by Asker

"When you are concentrating on something, you are using the hemisphere of the brain also used for processing motor input. It's also noticeable that some people walk more slowly when they are thinking of something difficult. This is caused by interference from the two activities fighting for the same bit of brain to process them. By bidont_use_thisip or sticking your tongue out, you are suspending motor activity and keeping your head rigid, to minimise movement and hence interference."

Source(s):
[link to www.smh.com.au]