Exercise Safely In The Heat This Summer

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Heat waves account for more deaths every year in the United States than any other form of natural disaster.  While not all of these instances are exercise related, it goes to show how serious one must be about working out safely in extreme heat. Through knowledge of the signs and symptoms, and taking the proper precautions, you should be able to safely enjoy outdoor exercise this summer.

Explanation & Identification of Heat Illnesses

Heat stroke is the most severe form of heat illness and occurs when our temperature regulation system is completely overwhelmed, leading to skyrocketing core temperatures.  When body temperature reaches 104o F or greater, loss of consciousness, seizure, and slow heart and breathing rate are common occurrences.  Symptoms preceding heat stroke include lack of sweat, confusion, dilated pupils, and a fast unsteady pulse.  Thirst IS NOT a valid indicator!

Heat exhaustion is a less dangerous form of heat illness related to severe water and sodium loss through sweating.  Symptoms include extreme thirst, headaches, general discomfort, severe muscle pain and cramps, dizziness, and nausea.  Heat exhaustion may precede heat stroke, so being aware of the symptoms is vital to exercising safely in the heat.

 

Risk Factors

If any of the following conditions apply to you, take extreme care, and consult a health professional before exercising in extreme heat.

  • Use of stimulant drugs, or medications such as beta-blockers, many anti-depressants, and diuretics.
  • Children and those over the age of 65 are more prone to heat illness.
  • Sunburn or psoriasis which interferes with sweating.
  • Alcoholism or recent binge drinking
  • Cardiopulmonary disease

 

How Can I Be Prepared?

The purpose of this blog is not to scare you out of exercising outdoors.  Exercising in the heat can still be a safe activity so long as it is done properly.  Below are some tips to exercise safely this summer:

Give yourself time to acclimate to the heat.

Light activity in the heat for  5-7 days before intense exercise has been shown to improve the ability to regulate body temperature.

Stay hydrated.

Try to drink 20 oz of fluid two hours prior to exercise, another 8 oz right before, and then two large sips every 10 to 15 minutes while exercising.  Eating a healthy diet and getting fluids in throughout the week is also important.

Do not exercise in the middle of the day.

Try to get out early in the morning or in the later evening hours to avoid the worst of the temperatures.

Have a plan.

An extremely hot day is not the time to go for a spontaneous run or ride; know your route, and include shaded stretches.  Also, be sure to let someone know that you are going out to exercise and will let them know when you’re done.

Listen to your body and be smart.

The humid 95o F day is not the time to push your luck if you are feeling abnormally tired, or if your diet has been crummy recently.  Nor is it the time to try a brand new activity.  Even if you are on a strict mileage plan leading up to an event, it is not worth it to push the pace or mileage in abnormally sweltering heat.  Use common sense, and be safe.

 

Take Home Message

Exercising outdoors can be a great way to jumpstart your workout routine and promote adherence; however you must be smart when it is very hot out.  Exercise safely this summer by being aware of the signs and symptoms of heat illnesses, and through utilizing the tips above.

 

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