Doesn't always help. You can exhaust yourself in the heat faster than your body can hydrate.Water works wonders, I did a 10 mile hike at the dead sea a few years back, 115 sucks, but water does wonders.
Try 40lbs of camera gear, 50lbs of body armor, full ABU's in Iraq in 120* heat for 12 hours. I drank GALLONS of water a day and still had heat exhaustion a few times in my 5 deployments.
But back to you!!!
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