每天真的要喝八杯水吗？_BEC初级作文

每天真的要喝八杯水吗？

And this is one of the reasons we're even discussing this - because increasingly drinking water doesn't just come out of our taps for free. It's sold to us by the same clever people that sell us yoghurts with bacteria in them that probably don't do us much good, something I look at separately in the television series I've been making. And these companies pretty consistently recommend two to three litres of water per day.

So where did that number come from and is there any reason to think it correct?

Well the grain of truth is this - people in temperate climates who are not doing sustained physical exercise do need around six to eight cups per day but that can be contained in food, alcohol or caffeinated beverages.

Yes, beer and coffee do not dehydrate you to any noticeable extent (there's a nice paper where some medical students got to drink quite a lot of beer and had their urine studied - British Medical Journal (Clin Res Ed), December 1982, Acute biochemical responses to moderate beer drinking, Gill GV).

There is no evidence that adding the eight cups of water to everything else you drink will do you any good and it could do you harm (American Journal of Physiological - Regulatory, Integrative and Comparative Physiology, November 2002, Drink at least eight glasses of water a day. Really? Is there scientific evidence for "8x8"? Valtin H).

But the great thing is that just like a top-level athlete you don't need to worry about exactly what that total daily requirement is because your body will sort it all out for you.