“每天喝八杯水。”“如果您口渴，您已经脱水了。”“水合是健康皮肤的关键。”如果您以前从未听过这些水咒语，请移动，这样我就可以分享您藏在下面的岩石。
守护者本周发表了一篇有趣的文章，标题为“关于水合的真相：您应该每天喝八杯水吗？”在其中，作家艾米·弗莱明（Amy Fleming精力充沛，不可阻挡，永恒的女神，而且那些每天喝不到两升的人被枯萎了，饱受头痛的果壳应有的每一次不幸脱水。什么是真实的，什么是垃圾科学？
这是真的：您应该一定要喝酒一些每天的水量。哈佛医学院说四到六杯。水合比脱水更好。脱水有可能引起轻度头痛。因此，一整天的饮用水都有其好处，嘿，这简直令人耳目一新，而且在很多时候，它是免费的。
但是，这是“每天八只眼镜”背后的科学，“口渴意味着您脱水”变得更加模糊。For one thing, go ahead and wait until you’re thirsty to down a glass of water, if you prefer, because healthy adults are still well within the body’s ideal water level by the time thirst kicks in. Despite the claims from hydration hawks, there’s no reason that your fluids can’t come in the form of coffee, milk, or even beer, all of which have been shown to hydrate about as effectively as water. And while experts recommend a certain amount of fluid intake each day, there are recommended limits, too. Water intoxication is a real condition than can occur when you drink more water than your body can even pee out, leading to electrolyte imbalance and disrupted brain function. It’s rare, but it can kill. So don’t do that.