> quite a few people don't actually hydrate enough during the course of a day
Do you have some cites for this? I've heard some of the dumbest damn things about water (like the 'eight glasses a day' myth) and it's hard to keep them all straight.
This is highly variable, of course. If you go out an run a 45 minute 10k, then you're going to need a lot more water than someone who has done minimal physical activity all day.
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> quite a few people don't actually hydrate enough during the course of a day
Do you have some cites for this? I've heard some of the dumbest damn things about water (like the 'eight glasses a day' myth) and it's hard to keep them all straight.
You should be consuming about 3 liters of liquids (not necessarily water) per day for an average male: http://www.mayoclinic.com/health/water/NU00283
This is highly variable, of course. If you go out an run a 45 minute 10k, then you're going to need a lot more water than someone who has done minimal physical activity all day.
The Wikipedia entry (https://en.wikipedia.org/wiki/Drinking_water#Requirements) is also worth a look.