Are you ticklish?

Maybe you're ticklish or maybe you like to tickle other people, but do you know WHY we are ticklish?
Watch this & learn more...
Useful phrases:
tickling sensation – tingling feeling on or under your skin
nerve endings – points on nerves that send messages to your brain
electrical signals – messages nerves send to the brain
​defence mechanism – reaction from the body to protect itself from danger