I can point out that if one is dehydrated or over-hydrated, problems can arise. Dehydration is a problem facing many people in the West where sweat evaporates off the skin when the body tries to cool down. Where I live in Arizona, you don't even know you're sweating because the wind takes the moisture right off your body.
Overhydration can be deadly, as well as dehydration. There was a woman in Buffalo, NY in a water drinking contest. She chugged a few gallons of water (I don't know the exact amount) and died of OVERhydration. That sounds like an oxymoron, but it can happen.
Dr Dan Negoianu and Dr Stanley Goldfarb, of the Renal, Electrolyte and Hypertension Division at the University of Pennsylvania, said no single study indicated average healthy people needed to drink this amount of water - a total of 3.3 pints - each day.
I know when I am hiking, I need to drink around 4 liters of water per day. However, that's with at least five miles of travel with a heavy pack on so that's quite different than a sedentary lifestyle. Now I think I drink 2-3 liters per day, and I feel fine.
If you listen to your body, you will know when you're dehydrated and need water. Right now my body is telling me I need to drink.
I can notice poorer concentration, slower movement, headaches if I stand up too fast (same with food headaches I guess), and drowsiness.
If you have those symptoms, drink some water and eat some food
. As I just said above:
The researchers did find some evidence that individuals in hot, dry climates, as well as athletes, need to increase the amount of water they drink. Studies have also shown that drinking lots of water helps the body to clear salt and urea.
Thanks for telling me something I already know...
And also as I just said above:
Headaches also are often attributed to water deprivation, but there is little data to back this up, claim the scientists.
Only one small trial has addressed this question, and while trial participants who increased their water intake experienced fewer headaches than those who did not, the results were not statistically significant.
They should have asked me to participate in that study
. www.telegraph.co.uk
(visit the link for the full news article)



