I just got back from a arduous backpacking trip where the temps were approaching 90 each day (very unusual for the mountains). We had to fight miles of blowdown and probably racked up 8000'+ of climbing in 2.5 days- one of the toughest trips I've done thanks to the combination of heat and blowdown.
Anyways I drank a lot of water. But every other 16 oz Nalgene I drank, I added a Nuun tablet. Every two to three hours I downed a Salt Stick tablet. Before I went to bed I drank a Nuun Recover packet mixed with water. Amazingly, while it wasn't an overly pleasant trip- I didn't suffer too badly. Staying hydrated and keeping electrolyte levels up definitely made a huge difference.
dang, I've cut back on hiking because of heat and smoke.
