How Much Water Do We Really Need to Drink?

By Brian Lemay 100 comments

In elementary school,
most of us learn the human body is
75% water and we are supposed to drink
eight glasses of water every single day. But that H2O knowledge,
that’s evaporated. Hey, hydraters. Trace here for D News. Babies are wet. Yeah, they are soaked in water. A recent NPR blog post talked
about how hydrated babies are. They are 75% water
when they’re new. Just for comparison,
potatoes are about 80% water and bananas, they’re 74% water. As we grow older, we dry out. Adult men are only 60% water
while women are 55% water. The reason being
men tend to have higher amounts of muscle
and women more fat, which means muscle stores
more water and fat cells are bit drier on average. But the fluid is actually
stored all over our body. Some is extracellular, stored
in the liver, the kidneys, stomach, bladder, spinal
fluids, and so on. But more than half is
actually inside of your cells. The bottom line is that
water is vital to our health. It helps lubricate joints. It gives our waste
something to dissolve into. It keeps our tissues
healthy and pliable. But we lose it. We lose it all day, every day,
sweating, pooping, peeing. Constantly, it’s
evaporating from our pores. And if we don’t replace
it, we become dehydrated, and our body suffers
in a number of ways. Which brings us to
a very good question that D News fan Vijanti Persad
asked on our Facebook page. What is the right
or required amount of water intake for a person? That is an excellent question. We’ve all heard
that you’re supposed to drink eight glasses
of water a day. But where did that come from? No one knows. The debunking
masters at couldn’t even find
original research on it. They talked to Barbara
Rolls, a nutrition researcher at Penn State who’s
written a book about water, and even she doesn’t
know where it came from. The Mayo Clinic says the
science is contested, but it sure is easy to
remember, so why not? Honestly, a lot of our fluid
intake comes from food. The rules say that we
need to drink fluid, so if we eat a
banana or an orange, we consume their fluid, which
is to say, we take their water. Like fricking Dune, man, the
spice must flow and all that. An orange contains approximately
eight ounces of fluid. But if you drink a lot
of diuretics, like soda, your kidneys start to shed
sodium, meaning you need more to replace it, which is bad. So while, yes, by drinking
sodas you’re drinking fluids, you’re doing it wrong. Exactly how much
water or fluid you’re supposed to drink
every day depends on things like body size and
how much exercise you get, how hot and dry the climate
is and whether you’re sick or pregnant. The truth is it
probably wouldn’t hurt you to drink 8 to 12 8
ounce glasses of fluid per day, but a really good way
to test whether you’re drinking enough water is to
look at your pee– seriously. When I was hiking in
the desert, the guides told us that it should
be clear and copious. If it’s yellow, that
means you’re dehydrated. So drink up and keep a BPA
free water bottle around to fill it up directly
from your tap. What do you do to stay hydrated? Give us some strategies. Let us know in the
comments, and thanks a lot for watching D News everybody.


daisy zamora

May 5, 2015, 4:58 pm Reply

If i don't drink water i get sick urinary tract infections lower back pain and dehydrated. ..maybe u don't need to drink 64 oz but u do need to drink some what water and it is important. U do see and feel a difference from not drinking water to drinking water.

dark flux

Jun 6, 2015, 7:03 pm Reply

that's funny cause i've always used my urine as a guide to hydration, too 😀

Jorge Alejandro Rodríguez

Jul 7, 2015, 11:31 pm Reply

I am a sweaty person and I do exercise I need a lot of water


Jul 7, 2015, 9:54 am Reply

Bi-lal kaifa! (Dune joke)


Jul 7, 2015, 6:40 pm Reply

I heard somewhere that the plastic in bottled water can slowly detoriate over time (a long time) and get into the water. This true?


Jul 7, 2015, 7:05 pm Reply

+1 for the Dune reference


Jul 7, 2015, 7:19 pm Reply

I cant believe muscles store more water than Fat, one would have thought the reverse is the case


Jul 7, 2015, 12:53 am Reply

I learned the pee thing from a little show called Survivorman. I use this knowledge everyday. 😀

Eric Albrecht

Jul 7, 2015, 1:57 am Reply

It's a touchy confession to make, but I am an alcoholic.
I've been noticing abnormal amounts of sweat. Does alcohol contribute to sweating and if so how? 
If you've already posted a video answering this question, please tag me in the video. I'm just a curious young adult who wants to know it all!


Jul 7, 2015, 4:35 am Reply

1:03 It is also used to make wires that transmit protons instead of electrons, a hydrogen atom without the electron, down a one molecule thick chain of interlocking H20 molecules. Water is also used inside cells as buffers between proteins, a way to fill gaps in exchanges of information of protiens, and other amazing functions.


Jul 7, 2015, 6:06 am Reply

Drink it from the tap? Gross.


Jul 7, 2015, 6:40 pm Reply

actually, completely clear pee mean's you're drinking too much water, your pee should be a "pale straw" colour (basically slightly yellowed)

Got Wire

Jul 7, 2015, 12:54 pm Reply

Carry around a jug of water really helps

friendly911 OS

Jul 7, 2015, 6:48 am Reply

And a doctor told me yellow pee is good, and clear pee means that there's something wrong with your body, I dono whom to believe anymore…


Jul 7, 2015, 5:44 am Reply

3-4l per day with near 1l right after I woke up 🙂
Better drink more then less, the only downside is to pee more but the benefits are much higher ^^

Osman Yildiz

Jul 7, 2015, 6:52 pm Reply

You need to drink as much water as you want. If you are thirsty drink. If you are not its your choice

iClone Animations

Aug 8, 2015, 10:02 pm Reply

He reminds me of Cisco from The Flash.


Aug 8, 2015, 8:45 pm Reply

I miss this intro

Jessica Schilter

Aug 8, 2015, 1:25 am Reply

no one should worry about drinking too much water unless they are a professional runner. It is very VERY difficult to consume too much water and most people do not drink enough.

tim gersh

Aug 8, 2015, 5:57 am Reply

well i like to drink water before a long run

Future Priest

Aug 8, 2015, 4:38 pm Reply

I heard it was like 5 litres a day..


Aug 8, 2015, 10:04 pm Reply

You cant always rely on the color since vitamins and minerals can sometimes affect that. Good rule though for those who dont take anything supplements.


Sep 9, 2015, 10:12 pm Reply

i measured how much water i drank once i drank 12 glasses of water + the fluid i get from food is about 3 glass= 15, oh fuck

William T. Riker

Sep 9, 2015, 6:13 pm Reply

Water is the stuff of life lads. Humans don't need as much food, but we sure as hell need plenty of water. If you're thirsty, drink. Drink to your hearts content until you feel you don't need any more.


Sep 9, 2015, 1:42 am Reply

8 glasses of 8 oz. is only half a gallon.  That is not that much.  I drink that much by lunch time.  Drink up people.

Reid Williams

Sep 9, 2015, 7:15 am Reply

I just drink When I'm Thirsty. Seems to work fine.

the lightest phase of the moon

Sep 9, 2015, 2:27 am Reply

This inspired me to drink water

Chance Watkins

Sep 9, 2015, 5:31 pm Reply

Very interesting. Thanks for sharing this with us; Jesus Christ Bless! 🙂

Paul O’Neal

Oct 10, 2015, 7:46 am Reply

There are many variables that determine the amount of water you need to drink per day.

Paul O’Neal

Oct 10, 2015, 7:49 am Reply

I drink a gallon of water per day and I am fine. I also exercise every day…

Paul O’Neal

Oct 10, 2015, 7:56 am Reply

Don't judge the color of your urine by how it looks in the toilet.

Sanjay Gandotra

Nov 11, 2015, 9:21 am Reply

We should be able to generalize ourselves for the right amount of water to be drunk Whatever quantity of water we may drink, our digestive system absorbs only the amount enough for the kidneys to process. If we drink more than that. Prrrrrrr…. it flows out through the digestive tract. Right quantity is what keeps the urine colorless and one feels like urinating once every hour.

KhongtheFork WithaKnife NoSpoon

Nov 11, 2015, 10:03 am Reply

The water at 2:18 must tastes really good.


Nov 11, 2015, 10:52 am Reply

i drink 16 to 24 litres of water a day

Elan Law

Dec 12, 2015, 8:22 pm Reply

I forget to drink water and hence need a daily reminder so I started using "Rewire – Habit & Goal Tracker" an android app. It reminds me like every hour and keeps me hydrated!😊

Alexander T.

Dec 12, 2015, 10:02 pm Reply

IF it's yellow your dehydrated. Wow…there was like one time when it wasn't yellow literally only one time I urinated and it wasn't yellow. Damn.

The Xextreem

Jan 1, 2016, 11:14 pm Reply

around 4 liters water everyday. Why don`t know i sweat easy so i guess that's why i need allot of water.


Jan 1, 2016, 4:54 pm Reply

Pure coconut water

Nathaniel Brown

Jan 1, 2016, 12:45 am Reply

lol I literally only drink sodas. ive had maybe one glass of water in about 6 months. My urine is clear quite often.

Cloudclaws AJ

Feb 2, 2016, 11:27 pm Reply

After i swim in chlorinated pools, my pee is completely clear and it burns? (my pee is usually light yellow or yellow)

denise hope

Mar 3, 2016, 9:37 pm Reply

I'm 90 something pounds and I'm trying to drink 16 cups is that fine….I'm 13 years old 🙂

King Ston

Mar 3, 2016, 8:25 pm Reply

My pee is yelow does that mean im dehydrated

Steve C

Mar 3, 2016, 11:59 am Reply

Great vid


Apr 4, 2016, 12:05 am Reply

I stay hydrated by drinking a gallon and a half of water everyday


Apr 4, 2016, 8:12 pm Reply

I HAVE A QUESTION!!!!!: I drink 2 bottles of water or less a day is that enough or do i need more thanks!

Kelli Rice

Apr 4, 2016, 9:26 am Reply

sip every minute

Aliya Hussain

May 5, 2016, 9:06 pm Reply

I drink half a glass of fluid everyday

Muhammad Zambri

May 5, 2016, 5:49 pm Reply



May 5, 2016, 3:44 am Reply

I drink around six 10oz glasses of water a day without fail almost every day, I've drank 4 glasses today back to back and I felt strange almost light headed…

Sourav Sarkar

Jun 6, 2016, 8:54 am Reply

don't over drink RO water when hiking, you will die.

Jasmin Fkn

Jun 6, 2016, 12:31 pm Reply

my doctor said I drink too much water I only drink 2 litres

Ivan Slopkov

Jul 7, 2016, 8:43 pm Reply

Main point of the video-Your baby is basically a potato.


Jul 7, 2016, 2:48 pm Reply

wtf is watur?

Jack Hall

Jul 7, 2016, 9:53 am Reply

he said pooping and peeing😂😂😂😂😆


Aug 8, 2016, 5:55 pm Reply

Wasted 2 min of my life lol u could of summed it up at the beginning not the end of the video

Denise Maria Branquinho

Aug 8, 2016, 11:48 pm Reply

it is absolutely wrong. We definitely don't need all that water, and if your pee is yellow, it doesn't mean that you are dehydrated at all.

Letme chill

Aug 8, 2016, 12:51 pm Reply

i got a huge jug which i keep beside me at all times. and i refill it with a 20 litre bottle in the kitchen 🙂

Christopher Cutler

Sep 9, 2016, 10:25 pm Reply

so i drink 15 8 oz glasses per day and still light yellow what does this mean its only thing i drink no sodas ect.


Sep 9, 2016, 2:01 am Reply

litsen guys we should watch this video and then say that there wrong in the comment section


Sep 9, 2016, 2:13 am Reply

What???!! I drink a bunch of water and my pee is still yellow sometimes?

Christopher Cutler

Sep 9, 2016, 3:40 am Reply

thank you


Sep 9, 2016, 5:04 am Reply

wtf so what if some one gets ….a red ..pee…DAILY
….huh more like blood
wait ..WHAT ?

Truly Infamous

Oct 10, 2016, 10:20 pm Reply

All you have to do is drink when you're thirsty.

Meaghann Chatman

Oct 10, 2016, 2:48 am Reply

Not true I drink everything not water my pee is yellow but I'm not dehydrated

Bryan k

Oct 10, 2016, 9:39 am Reply

he just called all women fat

Pigeon Master

Nov 11, 2016, 10:04 pm Reply

Ty now I know why my heart keeps beating fast. This video make sense I appreciate it. After drinking a lot of water I feel good

Gates Johnson

Nov 11, 2016, 6:29 am Reply

Overhydration is more dangerous then dehydration
-the more you know
You have a better chance to die from over hydration then you do dehydration
Death from dehydration only occur in cases of extreme illness and extreme isolation

To know if your hydrated listen to your body
the feeling of thirst acts as your bodies indicator that you need water


Nov 11, 2016, 7:19 pm Reply

Piss is supposed to be a light yellow.

Well Slap My Ass And Call Me Sally

Jan 1, 2017, 3:21 am Reply

I heard you're supposed to drink 2 litres of water.

Deeken Wheeler

Feb 2, 2017, 5:46 am Reply

I love water!

iswer shahi

Mar 3, 2017, 8:17 am Reply

Where is the fucking answer?


Apr 4, 2017, 2:38 pm Reply

Oh nice, my pee is csrystal clear! Haha

Noor ul Huda

May 5, 2017, 3:56 pm Reply

i drink almost 2 ltr water everyday still i feel un hydrated what should i do

Sarah Badra

May 5, 2017, 5:17 pm Reply

I drink 3000 to 4000 ml of water daily coz I have kidney stones and the only way to beat the pain and get rid of them is by drinking loads of water.. I used to hate drinking much water before and drank soda instead.. look at me now I damaged my kidneys health 🙁


Jun 6, 2017, 7:32 pm Reply

Well sarks I've done my yoga, I'm just glugging down the last of my water, washed & blowdryed my fringe so I'm gonna have a cuppa tea , put my candles on & watch tele. 📺📺📺

Jessie P.

Jul 7, 2017, 11:49 pm Reply

So if I walk on top of somebody, does that make me 75% Jesus?

David Guerrero

Jul 7, 2017, 6:02 pm Reply

I drink about a gallon of water a day. I also eat a lot fruits and vegetables, along with 5 days of exercise a week.


Jul 7, 2017, 12:27 pm Reply

You will need 7.8/10L Water

BlackHat Visions

Aug 8, 2017, 1:59 am Reply

0:37 because women are salty asf


Sep 9, 2017, 4:02 pm Reply

You know what I do to stay hydrated… I drink water 😱

Jacob Morehouse

Sep 9, 2017, 7:38 pm Reply

Potatoes > babies > bananas

Richard V.

Oct 10, 2017, 11:18 am Reply

So how much water?

cameron morris

Oct 10, 2017, 12:05 am Reply

My pee is green with a slight tinge of purple, am I dehydrated

Lalla Salma Elkettani

Nov 11, 2017, 7:11 pm Reply

I red somewhere that you need to drink 30ml for every kilo..for example i weight 70 i need to drink 2.10l of water per day which is plausible…

Lalla Salma Elkettani

Nov 11, 2017, 7:13 pm Reply

So what happens if you are too hydrated…


Nov 11, 2017, 7:34 pm Reply

Drink how much you want

Lore Silver

Nov 11, 2017, 8:03 pm Reply

im always dehydrated. since a month i started buying bottled water for work and when im in bed.

Muffin man

Dec 12, 2017, 6:01 am Reply

i think colorless urine is a sign of a little bit of overhydration. So, just keep it pale yellow and you should be goooooood

mr. boss

Dec 12, 2017, 2:57 am Reply

If I'm made of water and I drink water am I a cannibal?

Mr. 2 minutes

Feb 2, 2018, 10:05 am Reply

I think I got too much water everyday, Imma skinny guy(not penis), not moving too much, and thirsty every 5 minute cuz of quite high temperature room.

Lynne Valdez

Apr 4, 2018, 9:13 pm Reply

I drink and I pee I drink and I pee its too much for me. Thanks for the info though

Lauren Hawkins

Apr 4, 2018, 2:48 am Reply

0:38 you sexist all girls aren’t fat boys are to

only1 bracey

Apr 4, 2018, 3:34 pm Reply

I drink 2-4 litres a day

Dylan Jones

May 5, 2018, 12:45 pm Reply

Trying to get back into exercise but I think the best start – is 2 litres a day or a glass (medium) every hour at least.

Antonia S

May 5, 2018, 4:22 am Reply

I think I drink too much water my pee is very clear, but I can’t stop it I’m always thirsty. Any idea what it can be?

Golden Israelite

Sep 9, 2018, 6:04 am Reply

Everything in this video was on point except for the last thing he said “you should get the water directly from the tap”😂👍

Kitties Victoria

Oct 10, 2018, 12:06 am Reply

wellllllllllllllllllllllllllll i heard that clear pee is bad and ur over hydrated it should be light yellow (a little yellow)

Lloyd Nieto

Dec 12, 2018, 3:56 am Reply

love that shirt


Mar 3, 2019, 3:01 pm Reply

WOW so cool

Kana Girl

Aug 8, 2019, 1:23 am Reply

L love whater

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