Amazing and weird fact about psychology - The happier you are the less sleep you require to function in everyday life. Sadness increases the urge to sleep more #funfacts #interesting #didyouknow #facts #interestingfacts #amazingfacts #Psychology #PsychologicalQuotesIntj Psychology Says, Psychology Fun Facts, Psychology Quotes, Behavioral Psychology, Personality Psychology, Health Psychology, Physcology Facts, Weird Facts, Fact Quotes