Let's explore Biological Rhythms

Circadian Rhythms & Sleep

Every cell in your body keeps time. A molecular clock built from interlocking gene feedback loops generates a rhythm of roughly 24 hours — the circadian rhythm — that coordinates metabolism, hormone release, immune function, cognitive performance, and sleep across the day. At the apex of this system sits the suprachiasmatic nucleus (SCN), a tiny paired cluster of neurons in the hypothalamus that acts as the master pacemaker, synchronising peripheral clocks throughout the body to the external light–dark cycle.