The Bedtime Scientist

A question

Why does a hug make you feel calmer?

A calm, true answer. Then, if the wondering keeps going, the whole episode.

The short answer

Because gentle, steady pressure tells your body it is safe. Kind touch releases oxytocin, a chemical messenger that quiets the parts of the brain that watch for danger.

There is something else, too. Sitting close to someone calm can slow your own heart, until the two of you are more or less keeping time together. Calm turns out to be contagious.

Go deeper tonight

Friendship: The Science of Closeness

The full episode, in one calm voice, with nothing that startles.

The episode

Friendship: The Science of Closeness

0:00 8:32
Sleep timer

Read the guide for this one in the morning.

This connects to

Living bodies

One idea turns up in many different nights. Follow one and the library starts to join up.