(someone's) (body part) is asleep

When part of your body like your arm, leg, hand, etc. is in a strange position for a while, it starts to feel tingly. It feels like someone is poking it with lots of little needles. You describe this situation by saying that the body part "is asleep":

My foot's asleep!

You can also say that the body part "went to sleep":

My arm's gone to sleep. Can you move over for a minute?

This phrase appears in these lessons: