Fitness Articles

Tips for Exercising in Heat

Stay Safe and Stay Hydrated

The body dissipates heat 4 ways:
  1. Conduction – heat transfer from one solid object to another. The transfer is always from the warmer object to the cooler object.
  2. Radiation – the loss of heat in the form of infrared rays
  3. Convection – heat transfer from the body to the surrounding air. Air temperature must be cooler than skin temperature in order for this to occur. Wind is a good example.
  4. Evaporation – sweat from the skin results in heat loss by the body.*
If the body isn't accustomed to warm weather exercises, it takes approximately 10-14 days of exercise in those conditions in order to fully acclimate yourself.

Your body's “temperature regulation center,” called the hypothalamus, adjusts during this period. Changes during this period include sweat rate increases, sweating begins earlier, better distribution of sweat over the whole body, sweat becomes hypotonic (less salty), and blood volume increases.

*Sweating during exercise is very important and a great benefit to body temperature regulation, provided the sweat can evaporate easily. Be careful during hot and humid conditions because there is so much moisture in the air that it’s hard for your sweat to evaporate and your body temperature can raise quickly. The average person has between 2-4 million sweat glands throughout the surface of our bodies.

Some things to think about during hot weather exercise:
  • Don't expect peak performance – your heart works harder and not as much blood is delivered to the working muscles.
  • Clothing should be loose and absorbent, light in color to reflect heat.
  • Drink water during, before and after exercise.
  • You only need electrolyte replacement drinks (Gatorade/Powerade) if you are performing long term exercise (90-plus minutes).
  • Use sunscreen – not oil based or suntan oil.

Click here to to redeem your SparkPoints
  You will earn 5 SparkPoints
Page 1 of 1  
Got a story idea? Give us a shout!

About The Author

Lonnie Soloff Lonnie Soloff
Lonnie has a master's degree in physical therapy and is the head physical therapist for the Cleveland Indians.

x Lose 10 Pounds by April 10! Sign up with Email Sign up with Facebook
By clicking one of the above buttons, you're indicating that you have read and agree to SparkPeople's Terms & Conditions and Privacy Policy and that you're at least 18 years of age.