Sci-joke!

Son:Dad,they say whenever you feel nervous, move in open air and you’ll be relieved of nervousness.
Dad: What they say is right,my son.
Son:Is there any science behind it?
Dad: Yes, of course!
Son: What’s that?
Dad: Explanation is very simple. When you are in open air you get sufficient oxygen
and your 'nervous' state is oxidized to’ ‘nervic’ state which tautomerises to ‘nirvic’ state meaning fearless state. So you get over your nervousness, my son!