Do You Need 8 Glasses of Water Daily
The gist
The "8 glasses" rule is a rough guideline, not science — your real needs depend on body size, activity, and climate.
Explain like I'm 5
It's like how some plants need more water and some less; people also need different amounts of water depending on how much they move and where they live.
Big picture
Understanding hydration needs helps people avoid both dehydration and overhydration, promoting overall health without sticking to a rigid rule that may not fit everyone.