Why Does Rain Make You Sleepy?

What is it about rainy days that makes us so sleepy? Some of the answers may surprise you.

4 Reasons Rainy Days Make You Feel Sleepy

Why Does Rain Make You Sleepy?

Breakdown: Why does rain make us sleepy?

Why does the sound of rain make me sleepy? - Quora

This Is Why You Feel Tired And Sad When It Rains - Cultura Colectiva

This Is Why You Feel Tired And Sad When It Rains - Cultura Colectiva

Why does the winter weather make us feel so sleepy?

Does Getting Wet from the Rain Make You Sick? - Blogs - Makati

Why Does Rain Make You Sleepy? Rain & Sleep

Why does rain make you feel sleepy?