Sleep is more than just downtime.
Pierre-Auguste Renoir: Bal du moulin de la Galette (Dance at Le Moulin) "Gaze at a Renoir painting of nineteenth-century Parisian Life and you will see the extended light. Spilling out of the homes and onto the streets, gas lanterns began bathing entire city districts with illumination. In this moment, the influence of man-made light began its re-engineering of human sleep patterns, and it would only escalate. The nocturnal rhythms of whole societies - not just individuals or single families - became quickly subject to light at night, and so began our advancing march toward