I’ve never understood the “sipping” part. Working in the heat (110 + sometimes) I’ll drink 10-15 bottles of water and gateraide. I alternate them, and drink at least one bottle on the drive to the site. I see the bottles are 16.9 ounces. Recommended normal drinking is 8 to 10 glasses (8 ounces) a day. Of course if I’m sitting at my desk I’m thinking “How the heck can I drink eight glasses of water!?”
There are just some people who will stay focused on work or some thought in their mind....in 95-degree-plus heat, and two hours later into this process...they feel a bit exhausted or notice that they just aren’t sweating much now, and nausea has set in. Those are the people I’m talking about, that ought to be taking gulp or two every thirty minutes. If you are doing physical stuff...you ought to have at least one Gatorade every four hours. Diabetic? Nope...use plain ice-tea and a lemon. It just depends on your age, health situation, and work required.
I’ll give you a good example here. Back around 2003 in Europe....we had this great heat-wave. For about five weeks, it stayed at 95-degrees daily and never eased up. Somewhere around 3,000 French folks (mostly over 65) died from heat exhaustion. Across the border in Germany, same temperature, but only a couple hundred folks dying from the same thing. Difference? The older French were going to mostly wine in the afternoons. The older Germans were going to bottled water.