Use Caution When Exercising in Hot Weather

SATURDAY, June 30 (HealthDay News) — During hot weather, people
who exercise outdoors need to take steps to avoid heat injury, according
to the American Council on Exercise.

Staying hydrated is essential, and can be accomplished by drinking a
large amount of fluids (until you’re just short of feeling bloated) 30
minutes before exercising, drinking at least six ounces of fluids every 20
minutes during exercise and drinking beyond the point where you are no
longer thirsty after exercise, Dr. Cedric Bryant, the council’s chief
science officer, said in a council news release.

Water is generally the best fluid, unless your exercise session lasts
longer than an hour. In that case, a sports drink may be more
beneficial.

Another tip from the council is to gradually adapt your body to
exercising in hot weather. This usually takes 10 to 14 days and can
greatly reduce your risk for heat injury. Once your body is acclimatized,
you will sweat sooner, produce more sweat and lose fewer electrolytes,
Bryant said.

The benefits of acclimatization include a lower body core temperature,
a decreased heart rate during exercise and a reduced risk of
dehydration.

Reducing your exercise intensity level during hot weather — especially
during the acclimatization period — is another good idea, the council
suggests. Also, don’t wear rubberized sweat suits or any other clothing
that is impermeable to water. This type of clothing prevents the
evaporation of sweat from the skin, increasing the risk of heat injury,
Bryant said.

Respect the conditions. In general, you should consider forgoing
exercise when the temperature is above 90 degrees Fahrenheit and the
relative humidity is above 60 percent.

More information

The Texas Department of Public Safety has more about exercising safely in hot weather.

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