It’s hot. It’s humid. I’m in the southeast so from May until August, at least, this is the norm. Sometimes longer than that. Training for a fall marathon, reciting the mantra “humidity is the poor man’s altitude” and downing electrolytes.
But have you ever gotten late into a long run, somewhere past the 90 minute mark, and found yourself completely confused about how far you have to go before you turn around? Or not sure how you ended up in that neighborhood? Can’t remember that guy’s name as he waves and runs by?
It’s not you. It’s your hydration.