Enlighten Your Clock: How your body tells time

A comic book published under „Creative Commons License“ on the subject of the circadian rhythm can now be downloaded free of charge. It is a wonderful, creative and informative book, that we would like to recommend. It is written and illustrated by Coline Weinzaepflen
Edited by Manuel Spitschan, PhD, you can find it on: https://enlightenyourclock.org/