Why Can't You Tickle Yourself?

Mostofushavea ticklish spotsomewhere on our bodies，and it is usually pretty easy to find.

Forsome it's just above the knee，for others it’s the back of the neck，and some of us go into fits of laughter if someone grabs our sides.

Laughing when another person tickles you isanaturalreaction.

Scientists have discovered that the feeling

我们大多数人的身上都有一个怕痒的地方，这个地方通常很容易找到。（剩余2252字）