Just drink plenty of water and you’ll be fine. Right? Not exactly. Anyone that has run in the heat and ran face first into “the wall” can tell you that sometimes figuring out what enough means can be complicated. With summer training comes the heat and humidity, two of Mother Natures tougher foes for endurance athletes.
If you don’t have access to a coach or a lab, how do you figure out how best to hydrate so you don’t end up crawling along the sidewalk?