During hot and humid months, exercise indoors or in the pool to avoid blazing summer temperatures. Page ContentWhen exercising during the summer, it is best to work out in the cooler morning or evening hours to minimize stress on your body. Christina Walker, M.D., a Sports Medicine Specialist at Kelsey-Seybold, says workouts in extreme heat should be in no more than half-hour or hour sessions.“Hydration is key to a healthy workout,” says Dr. Walker. “In record setting temperatures, you will need to increase your fluid intake regardless of your physical activity level. It is best to avoid liquids that contain alcohol or large amounts of sugar.”Several factors might put you at greater risk for heat-related injuries or problems.“Young children up to four years of age, the elderly, those with heat-related problems in the past and people with certain medications are more vulnerable to suffering from heat exhaustion, heat cramps or even heat stroke,” says Dr. Walker. During these hot and humid months, Dr. Walker recommends exercising indoors or in the pool to avoid blazing summer temperatures.“Swimming is a great way to work out while keeping you cool and refreshed,” she says. “Remember it is easier to prevent heat illness than to treat it, so be sure to take the proper precautions if you plan on shaping up outdoors,” concludes Dr. Walker.