Sweating profusely isn't bad, but remember that any sweat that rolls off is wasted. It only cools you if it's evaporating on your skin.
Make sure that you're replacing electrolytes along with water. That's super important for someone who sweats heavily, like me.
When you say you drink lots of water while running, what are you using to carry your water? Consider maybe wetting your hydration pack or belt down before your run - that'll make it heavier obviously, but also add some evaporative cooling.
I don't think turning red indicates anything significant? More to do with the capillary structure in your face? Not really sure though. Obviously overheating is nothing to mess with, I just don't know if turning red has much to do with it. What symptoms of overheating are you experiencing?
I just got a pair of Arm Coolers and they really work. They make a base layer, bolero and leg coolers as well - something to try maybe!
Last edited by OakLeaf; 07-10-2009 at 05:34 AM.
Speed comes from what you put behind you. - Judi Ketteler