Please give me your best tips to keep cool while I'm doing long bike rides on my road bike on warm days (and assume I know the basics of hydration, electrolytes, sports drinks, etc).
I overheat really easily when active, even when the weather might not seem that hot to other folks. My face gets really red, my head is hot and often headache-y, and I feel warm all over, even when I'm hydrated and in good shape (and the same thing happens to my dad and sister).
On Sunday, I'm going out for a long bike ride, 90 miles or more, near where I live in Portland, Oregon. The weather should be in the mid-70s and not too humid, which probably sounds great to hot-landers, I'm sure, but it'll feel hot to me, especially on long climbs.
This isn't dehydration, and drinking more water doesn't help (which is the common advice
you find online). My body and especially my head don't sweat all that much, even when my cycling companions are drenched. On my last long bike ride last weekend, I was drinking so much, at least one and a half to two water bottles an hour (electrolyte tabs dissolved in water, mostly, with some plain water too), that I had to pee constantly (and yes it was clear to light yellow).
My helmet is well-ventilated, and I have good cycling clothes.
What works pretty well, at least on my a couple of recent, shorter rides:
Using one water bottle for electrolyte/sports drink and using the other for plain water, which I squirt onto my head, neck, and chest when I'm feeling warm (artificial sweat!).
Making sure to stop in the shade when I do stop.
Wetting the pads inside of my helmet (more artificial sweat) when I stop to re-fill my water bottles.
Some other things I might try (some based on this article in Bicycling Magazine):
Ice my legs before the ride
Drink protein with my carbs
Make a pre-ride slushie (and see if I can buy one or two along the way)
Switch to breathable sunscreen
Wear deodorant but not anti-perspirant
Pack my water bottles with ice before filling (when ice is available).
Take my gloves off at times.
Bring a tube sock and stuff it with ice and put it on my neck/under my jersey.
Stop at streams along the way to splash.
So how else can I keep cool, especially when I don't have any access to ice?