Rarely. Marathon training in summer, and being lazy about starting long runs early in the morning. I'm pretty confident that I can say the incidence is not zer

Rarely. Marathon training in summer, and being lazy about starting long runs early in the morning. I'm pretty confident that I can say the incidence is not zero, but I'd agree it's less than 4. this is over years. starting a multi hour run at 10 instead of 7 has some side effects. I'm not fast. I cover the distance. I've gotten into really weird headspace. I'm pretty good about tracking calories, so I'm pretty sure it was the heat from running when it's hot.