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Should we actually drink 2,5 liters of water a day?

Remember the rule of 8 glasses of water a day? Be sure that it's a myth. And we'll explain you why.


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What are your thoughts on this subject?
192 Comments
Richard Rettke
8 eight ounces glasses of water is 64 ounces, which is 1.89 Liters. So if you can't get the math right why should I believe any of your other assumptions.
47
Oct 6, 2016 8:23PM
Bruce Lorenzana
I never drank water until I started having heart attacks from dehydration. Now I drink 4-16 oz water bottles EVERYDAY. I gave up coffee and tea also. I start at 9:30am and finish at 9:30pm and sleep all night through. Miss coffee. Don't miss the heart attacks. Thery're rough and don't get any easier even after 5 attacks.
25
Oct 6, 2016 8:38PM
Chris Braun
You assume the glasses hold a volume of 1 cup. Perhaps the 8 made u draw that conclusion? Either way, most glasses are larger than 8 oz, and nowhere does it say 8 8 oz glasses.
18
Oct 6, 2016 8:36PM
Chris Braun
Richard Rettke I too have heard the 8x8 rule many times. However, since no value for oz is given, you can easily find out by solving for z, where z= fl oz per glass. 2.5L=84.54 fl. oz, so 8z=84.54, divide each side by 8 and you're left with z=10.57 fl. oz.per glass. Elementary. 2 1/2 oz is like two large sips. Never assume, as you suggested in your original post. That was the only thing I was getting at, not insulting you or saying you're wrong. Nowhere do I read you go by the name Ricky, but I have heard that many times as a name for Richard! Still, I wouldn't assume you go by Ricky just because it doesn't say otherwise.
6
Oct 6, 2016 11:33PM
Carmine-James Pitaniello
I think the recommendation is actually about half your bodyweight in ounces, depending on your local climate.
6
Oct 6, 2016 8:53PM
Paulo Andre Stanulonis
That has to be one of the craziest recomendations!! lol
5
Oct 6, 2016 8:34PM
Cottec
This is bollocks, I drink at least 1.5 Ltrs a day, and at 67 my skin is smooth as silk and no wrinkles.
1
Jun 15, 2019 6:48PM
Veronics Moss
I loved my drinking water.
1
May 27, 2019 4:47PM
Bernard Andrzejewski
I think they're talking about 10 cups @ 250 ml per cup...the usual size of a cup. Some heart patients should limit their fluid consumption to 6 cups from what I've been told. Also salt should be of minimal use. Their effect on the kidney, heart, liver is beyond me
1
Apr 21, 2019 8:50PM
Tamara Durant
Bob Struckman, drink the water and add more salt to your food...simple...
0
Mar 4, 2019 8:22PM
Tamara Durant
Kathy Phillips, correct. The kidneys can only handle 500ml/hr. There is a thing called water toxicity...it can kill you...
1
Mar 4, 2019 8:18PM
Tamara Durant
Evan McGrath, litres is Australian spelling, liters is USA.
0
Mar 4, 2019 8:16PM
Tamara Durant
The rule of thumb, especially in the tropics, is one litre per 30kg of body weight and then you have to add for every hour that you are sweating or in air conditioning. Fifty percent of all aches, pains and headaches are due to dehydration.
2
Mar 4, 2019 8:09PM
Veronics Moss
I loved drinking water.
1
Jan 28, 2019 5:02PM
Eileen Dunn
I was advised to drink less wine and drink more water. I did that,ended up drinking too much water,and washed the salt out ,which caused more problems. I’ve given up alcohol and drink what I feel.like and never felt better.
0
Jan 18, 2019 10:30AM
Paul Bison
Richard Rettke, where does it say, 8 is?
0
Jan 5, 2019 2:39AM
Sonia Ackhurst
Don't drink that much of it
0
Nov 9, 2018 5:54PM
sharky
Basically whenever u are thirsty u should drink water
0
Sep 14, 2018 4:58PM
Allison Aspden
It’s important to remain hydrated.
1
Jul 28, 2018 5:47PM
Mark Holden
Richard Rettke, where in the article does it specifically the size of the glass
0
Jul 5, 2018 5:54PM
Barbara Brady
dehyration is very dangerous and not to take lightly. After a 13 hour bus trip I ended up in hospital on a drip hallucinating - very sick indeed. Beware.
0
May 22, 2018 6:15PM

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