‘Life on Earth is adapted to the rotation of our planet. … There are also indications that chronic misalignment between our lifestyle and the rhythm dictated by our inner timekeeper is associated with increased risk for various diseases.’ — The Nobel Committee for Physiology or Medicine OUR existence is a rhythm which continues to play every 24 hours, throughout our lives. This is true for all living beings — animals, plants and even microorganisms. Sounds a bit poetic, a bit mystical — indeed that’s how our existence is. Our body functions are hardwired to an endogenous day and night clock. We follow this in autopilot mode — not at the conscious level, but very much like breathing. We breathe all the time but we don’t have to think about breathing. Likewise, a route is set for our bodies to follow every 24 hours (with individual variations of up to four hours or so). It is an intrinsic autonomous daily routine called the circadian rhythm. Here is a super summary of it. As the darkn...