The recommendation is to drink 8 cups of 8 oz glasses of water. This is around 64 ounces. I don't think you are really supposed to drink more than a gallon because you may get sick.
Actually, a better measure is based on your weight...recommended is 1 ounce for every 2 pounds of body weight. So a 200 pound person should drink at least 100 ounces/day.
I don't think a gallon is going to make you sick. The people that get "water poisoning" drink excessive amounts of water. I drank almost 2 gallons/day when I was pregnant and had no adverse reactions (other than using the bathroom every 30 minutes ).
The only thing I would caution if you drink lots of water (and/or live in a hot climate)...watch your electrolytes. You can get electrolyte powder to add to your water. It's tasteless and has no sugar, so it doesn't add calories. (Check out Electromix by Emergen-C.) Also, if you start getting muscle cramps, you may be low on potassium.
I drink a minimum of 80oz to 112oz. I tend to drink on the high end of the range on days when I'm doing heavy cardio - I'll get 40-60oz in before I even leave the house for the day (I workout in the AM)!
170oz seems a little high. I would worry about washing out key nutritents from your body. You can get sick from too much water, but I think the levels at which you'd need to be drinking are really, really high. If you google it, there are tons of articles out there. Typically it happens to distance runners.
I don't measure or track my water intake. I almost always have a beverage going, be it iced water or iced tea, cf diet coke, or some kind of crystal light. I also drink protein shakes as part of my diet plan. They call for 8 oz. of water, but I add that plus a lot of ice and blend it up.
I don't really count it, I just always have a water bottle around me...and refill it when it gets low. I would say I'm drinking over 100oz. a day, every day...many days a lot more.
wow 5ltrs a day?! I guess on a super hot day i could manage that... Usually i drink 2ltrs or so a day, but i find that being a diabetic my thirst can be excessive at times.
About 2L a day for me, not including the 40oz during exercise. 5L seems excessive to me as well. I agree with AFChick that a better gauge is based on body weight.
The recommendation is to drink 8 cups of 8 oz glasses of water. This is around 64 ounces. I don't think you are really supposed to drink more than a gallon because you may get sick.
This is what I more or less drink everyday. Most of the time it is a little more especially in the summer!