Exercising in the Heat

9 ways to keep your summer workouts safe.

By Barbara Russi Sarnataro
WebMD Weight Loss Clinic - Feature

Reviewed By Louise Chang, MD

During the long, cold days of winter, we long for summer exercise: soccer in the park, a bike ride along the river, a hike in the mountains, or just a day in the garden. But when the dog days of summer actually arrive, it's important to be prepared. Exercising in the heat can be risky if you aren't careful.

Personal trainer and marathoner Carla Branch saw the danger of heat and dehydration while running a marathon in Tupelo, Miss., in August a few years back. It was the weekend before Labor Day, Branch recalls.

"It was a hot, humid day, and we were running on country roads, and the aid stations were about five miles apart," she says. "There just wasn't enough support."

Because she planned ahead and placed extra water along the route, Branch was fine. But many racers weren't so lucky. "My friend started getting dizzy and staggering, and another guy had to be put on IV [fluid] because of dehydration," she says.

A large percentage of people couldn't finish the race, says Branch.


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