Running on a hot summer day can lead to trouble for even the most seasoned athlete.

"Getting rid of heat when you run is a very difficult process for the body to do, particularly when you're dealing with hot and humid conditions." said Dr. Joe Wilson, Medical Director with Peachtree Road Race.

As the summer heat rises, so does the body temperature, increasing the risk for heat-related injuries.

"If you're running and you begin to feel a little confused, your mind is not working as sharp as it should be, if paradoxically you begin to become chilled, if you feel a little nauseated and queasy in the stomach, these are indications that you might become overheated."

Dr. Wilson says that's when you should stop running and instead walk.  "We think walking is better than sitting and laying down. We think taking fluids is very helpful, getting out of the sun, into the shade."

Drinking plenty of water before, during and after the workout will help you stay hydrated. It's also recommended you spend a few weeks training at a slower pace, to help your body acclimate to the hot weather.