Sleep Science
Your body clock is a physical structure, not a metaphor
It sits above the optic chiasm, it contains about 20,000 neurons, it keeps near-24-hour time in a dish with no external input, and the genes that run it won a Nobel Prize.
Topic
melatonin
Every Kingdom of Dream article tagged melatonin — 2 pieces across 1 section.
Sleep Science
Blue light, screens and the evidence that is thinner than the marketing
Light does suppress melatonin and shift the body clock. Whether your phone at bedtime does enough of it to matter is a more interesting question than the blue-light-filter industry suggests.