Is it blasphemy to tell you to get an ewheel/ hub? Is that like saying get a moped, motorcycle, drive a car or have Jeeves drive you in? Along with diet I remember some Maxim issue years ago said pineapple makes your thing smell/ taste better. Sweat is urea so should help with sweating too, likewise Avoid asparagus. Off the top of my head I'd guess processed sugars should be avoided. As for helmets, some unrelated news said the old, you lose heat through your head was bogus. It just so happens the only exposed part in very cold weather is likely the head so it loses heat but is no more prone to heat loss or cooling than any other part of the body with comparable mass and surface area. Like fingers have much less mass and pound for pound more surface area. Ride slower at a steady pace. Don't keep backpacks on your back as like the folded skin it either makes the sweat more there or simply stops it from evaporating, not sure which. You also want clothes that breath. What was the Seinfeld episode where George got wool or cotton uniforms for the baseball team which seemed good at first but then they got itchy. I'd think cotton breaths more than spandex, lycra and whatever these new materials are though i think cycling clothes take sweating into account. they say they wick but do they breath well and let air in and out?