How Much Water Do You Actually Need to Drink?
How much water should you drink a day? Where the "8 glasses" rule came from, what the research actually says, and how to tell if you're drinking enough.
Tag health explained
Why Do We Need Sleep? The Science of Sleep Explained Simply
Why do we need sleep? A clear, plain-English guide to sleep cycles, REM, how much sleep you actually need, and what happens to your body when you don't get enough.