Football teams wearing red kits play better. The colour of your clothes can affect how you’re perceived by others and change how you feel. A review of football matches in the last 55 years, for example, showed that teams wearing a red kit consistently played better in home matches than teams in any other colour.

You can actually die laughing. And a number of people have, typically due to intense laughter causing a heart attack or suffocation. Comedy shows should come with a warning.

All mammals get goosebumps. When your hair stands on end, tiny muscles contract at each hair's base which distorts the skin to create goosebumps.