Jean-Michel Folon’s illustrations of “L’acte reflexe et l’acte volontaire” (Le Livre de Sante, v.8, 1967):
More images from volume 8 here.
One of my favorite childhood memories is my dad yelling at me and my sister to “stop breathing” because we were fogging up the car windows (he was taking us sledding). This naturally led to uncontrollable giggles as we tried our best to obey.
To see the previous volumes click here.