In an episode of the SciShow series Quick Questions, host Hank Green explains the science behind why humans are ticklish. Green also explains that the concept of tickling actually breaks down into two parts, knismesis and gargalesis, and suggests tickling may be a form of self-defense training.
SciShow Answers the Question ‘Why Are We Ticklish?’
Glen Tickle
Amelia's dad. Steph's husband. Writer, comedian, gentleman. Good at juggling, bad at chess.