Stay Hydrated in the Heat
By Deb Iovoli, MS,RDN,CSSD,LDN,
It’s
summertime! This time of year brings heat and humidity and the need to
consume more fluids on a daily basis, especially when running or
exercising. Dehydration certainly affects our training and racing
performance. As little as two percent of body weight lost in fluids can
impair performance.
Fluid balance is vital to normal
cardiovascular and thermoregulatory functions (body temperature).
Dehydration increases the risk of other heat illnesses, too, such as
heat exhaustion and life-threatening heatstroke, especially in hot,
humid weather or higher altitudes. Mild dehydration over time has been
linked with increased cancer risk, reduced salivary gland function,
kidney stones, and even fatal heart attacks.
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