Sweating and Thirst During Training

Sweating and Thirst During Training

Do you know why exactly are you sweating during exercise?

Sweating
The simplest means of losing heat is sweating.

During a training session, the metabolic rate increases to power movement, and heat production increases too. To regulate its core temperature within a few degrees of the normal resting temperature of 37 degrees, the body has to lose heat from its core into the environment.

The simplest means of losing heat is evaporation. Water vaporization from the respiratory passages and sweat on the skin transfer heat to the environment. In warmer conditions or during an intense training session, the body will produce more sweat in order to lose more heat by evaporation.

Losing fluid through sweat results in thirst and therefore drinking. Ignoring one’s thirst and not consuming liquid during intense training, particularly in hot environments could ultimately lead to clinically significant dehydration and malaise, but conversely, drinking too much may result in potentially fatal exercise-associated hyponatraemia (EAH), which means there are low sodium levels in the blood because of fluid overload.

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Written by Jenny Nickelson

Jenny Nickelson has been a sports enthusiast since childhood. Because of her deep love to water, she started training swimming in early years. Today she swears on variety and does it all: from swimming, running and cycling to fitness, skiing, dancing and mountaineering.

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