What you know might surprise you.
For decades, Americans have been told to drink eight glasses of water every day like it's a medical commandment. But that number was never backed by clinical research — and your body already has a far more sophisticated system for staying hydrated than any daily quota could provide.
The belief that breakfast is the cornerstone of a healthy day feels like timeless nutritional wisdom. But follow the money and the history, and a very different picture emerges — one shaped more by advertising than by science.
It's one of the most universal parental warnings in American history: bundle up or you'll catch a cold. The only problem is that cold temperatures don't actually cause colds. Understanding why we still believe this anyway says a lot about how health myths survive long after the facts catch up.
Americans treat the 'eight glasses of water a day' rule like it came down from a mountain on stone tablets. It didn't. The real story behind this deeply ingrained habit is more surprising — and more liberating — than most people expect.
If you grew up in America, someone almost certainly made you wait 30 minutes after lunch before getting back in the pool. It was enforced like a rule of nature. The actual science behind it is a lot less convincing than your parents' tone of voice suggested.
The advice to drink eight glasses of water a day is repeated so often it feels like medical law. But the origin of that number is surprisingly shaky — and your body may already be doing a better job of managing hydration than any fixed rule ever could.
The warning has been passed down through generations: crack your knuckles and you'll pay for it with arthritis later. One California doctor was so unconvinced that he ran a decades-long experiment on himself to find out. The results might make you feel a lot better about that satisfying pop.
Before Reddit became the front page of the internet, there was Digg — a scrappy, user-powered news aggregator that dominated the mid-2000s web and then spectacularly imploded. Here's the wild story of how it happened, why it matters, and what Digg is up to today.