Exactly how much water to a "glass"?

Some glasses are bigger. Some are smaller. I generally drink from a sports bottle all day... not exactly how big it is so I usually count it as 2 glasses. How many cups to a glass? I have googled this before and gotten conflicting answers.

8 ounces, or 1 cup

250 ml?

I have googled this before and gotten conflicting answers.

Really?
http://lmgtfy.com/?q=1+cup+in+ounces

wow...just...wow. That has to be the coolest thing ever.

8 ounces. To give you an idea of size: most regular sized water bottles, like from a machine, have a little over 2 servings. If you don't know ounces, a serving is also 240 mL.

The question I always have is, when "they" say 8 to 10 "glasses" per day, do they mean 8 to 10 8-ounce cups or 8 to 10 "glasses" which generally hold more like 2 cups (16 ounces.)

I generally assume it's 8 to 10 eight-ounce "cups" per day instead of "glasses."
But I could be wrong. It happens on occasion ;-)

250mL is pretty standard for a CUP of water

Fixed. A glass isn't a measurement.

when they say cups they mean standard measurement of a cup, not a glass

They don't say glasses they say cups (like measuring cups). Honestly, I think any glass you have will be OK - measuring doesn't have to be perfect on that one

Edit to add: anything with no caffeine can count.

Not a huge fan of glasses.

""So how much fluid does the average, healthy adult living in a temperate climate need? The Institute of Medicine determined that an adequate intake (AI) for men is roughly 3 liters (about 13 cups) of total beverages a day. The AI for women is 2.2 liters (about 9 cups) of total beverages a day. ""

http://www.mayoclinic.com/health/water/NU00283

I'd classify the mayoclinic as a pretty good source for medical information

8 ounces

""So how much fluid does the average, healthy adult living in a temperate climate need? The Institute of Medicine determined that an adequate intake (AI) for men is roughly 3 liters (about 13 cups) of total beverages a day. The AI for women is 2.2 liters (about 9 cups) of total beverages a day. ""

http://www.mayoclinic.com/health/water/NU00283

I'd classify the mayoclinic as a pretty good source for medical information

Might include this part too then:

Everyone has heard the advice, "Drink eight 8-ounce glasses of water a day." That's about 1.9 liters, which isn't that different from the Institute of Medicine recommendations. Although the "8 by 8" rule isn't supported by hard evidence, it remains popular because it's easy to remember. Just keep in mind that the rule should be reframed as: "Drink at least eight 8-ounce glasses of fluid a day," because all fluids count toward the daily total.

And, as is traditional, I'll add this, just in case the OP is drinking it purely because they think they HAVE to drink neat water...

You need the equivalent of 8 cups of water a day on average, from any source. These sources can be pure water/tea/coffee/juice/soda/milk/fruit/veg etc. It does NOT have to be pure neat water!

http://www.snopes.com/medical/myths/8glasses.asp

http://www.guardian.co.uk/lifeandstyle/2011/jul/13/myth-eight-glasses-water-day

http://junkfoodscience.blogspot.com/2008/07/wellness-water-8x8-myth.html

http://psychcentral.com/blog/archives/2010/12/08/the-myth-behind-drinking-8-glasses-of-water-a-day/


As for coffee being a diuretic, so many people just spout that word as a reason, without actually understanding what "diuretic" means.

di·u·ret·ic (d-rtk)
adj.
Tending to increase the discharge of urine.
n.
A substance or drug that tends to increase the discharge of urine.

Neat water is also a diuretic. The diuretic effect of caffeine is far, far outweighed by the actual water in the tea/coffee. Also, regular consumers of caffeinated beverages will build up a tolerance to said effect, eventually reaching the point where caffeinated drinks provide practically the same amount of hydration as a cup of neat water will.


http://www.divinecaroline.com/22178/46361-coffee-makes-dehydrated-say-what

http://worldofcaffeine.com/2011/06/14/caffeine-does-not-dehydrate/

http://advance.uconn.edu/2002/020722/02072207.htm

http://nomoredirtylooks.com/2011/04/surprise-caffeinated-tea-does-not-dehydrate-you/

http://www.nytimes.com/2008/03/04/health/nutrition/04real.html

http://www.sharecare.com/question/does-caffeine-dehydrate-not

http://www.artofdrink.com/2009/12/caffeine-in-coffee-does-not-increase-dehydration-during-hangovers.php

http://www.caring4cancer.com/go/cancer/nutrition/questions/do-caffeinated-beverages-cause-dehydration.htm

http://abcnews.go.com/GMA/story?id=5552790&page=1#.TrQWc0O5_oo

It would all be easier if everyone used the metric system

Agreed, but I think people would still ask how much water in a cup.

then they can grab a measuring cup from the cupboard and see


And bahaha maybe I should post one of a boxing kangaroo? Write "imperial" write in front of its boxing glove

""So how much fluid does the average, healthy adult living in a temperate climate need? The Institute of Medicine determined that an adequate intake (AI) for men is roughly 3 liters (about 13 cups) of total beverages a day. The AI for women is 2.2 liters (about 9 cups) of total beverages a day. ""

http://www.mayoclinic.com/health/water/NU00283

I'd classify the mayoclinic as a pretty good source for medical information

It's only a good source if you don't leave out key pieces of info. Such as where it says that all beverages (including caffeinated ones) count towards that goal, and that you get a lot of your water from food. And this: "Generally if you drink enough fluid so that you rarely feel thirsty and produce 1.5 liters (6.3 cups) or more of colorless or light yellow urine a day, your fluid intake is probably adequate."