Hey all, long-time lurker, first-time poster. In my younger days I spent many a summer working outdoors and I am a big-time sweater...and I mean big-time. At the end of the day after I dried out you could see the salt impregnated in my shirt & cap. Disgusting, sure LOL, but it made hydration a topic near and dear to me. I always drank plenty of straight H2O, three, sometimes four liters a day. I also carried a re-hydration formula that always worked for me. Half a liter bottle of water, little less than half OJ with a teaspoon of sugar and two shots of pickle brine. Sounds nasty but really it wasn't half bad and it worked for me. I've always found Gatorade and other sports drinks a tad too sweet to be guzzling very often.