- Home
- Parents Home
- Allergy Center
- Asthma Center
- Cancer Center
- Diabetes Center
- A to Z Dictionary
- Emotions & Behavior
- First Aid & Safety
- Food Allergy Center
- General Health
- Growth & Development
- Flu Center
- Heart Health
- Homework Help Center
- Infections
- Diseases & Conditions
- Nutrition & Fitness Center
- Play & Learn Center
- School & Family Life
- Pregnancy Center
- Newborn Center
- Q&A
- Recipes
- Sports Medicine Center
- Doctors & Hospitals
- Videos
- Para Padres
- Home
- Kids Home
- Asthma Center
- Cancer Center
- Movies & More
- Diabetes Center
- Getting Help
- Feelings
- Puberty & Growing Up
- Health Problems of Grown-Ups
- Health Problems
- Homework Center
- How the Body Works
- Illnesses & Injuries
- Nutrition & Fitness Center
- Recipes & Cooking
- Staying Healthy
- Stay Safe Center
- Relax & Unwind Center
- Q&A
- Heart Center
- Videos
- Staying Safe
- Kids' Medical Dictionary
- Para Niños
- Home
- Teens Home
- Asthma Center
- Be Your Best Self Center
- Cancer Center
- Diabetes Center
- Diseases & Conditions
- Drugs & Alcohol
- Expert Answers (Q&A)
- Flu Center
- Homework Help Center
- Infections
- Managing Your Medical Care
- Managing Your Weight
- Nutrition & Fitness Center
- Recipes
- Safety & First Aid
- School & Work
- Sexual Health
- Sports Center
- Stress & Coping Center
- Videos
- Your Body
- Your Mind
- Para Adolescentes
Is It Dangerous to Run in the Heat?
I live in Florida, so it's really hot all the time. Is it dangerous to run outside in the heat? Will I burn more calories outside or inside on a treadmill?
Yes, it can be dangerous to run outside in the heat — especially in areas where the humidity can get pretty high. As temperature and humidity rise, it becomes harder for your body to cool itself down, which can lead to heat-related illnesses such as heat cramps, heat exhaustion, and heat stroke — a medical emergency. Dehydration increases the risk of heat-related illnesses.
When you go running, be sure to wear light clothing, stick to the shade, and drink water every 15 minutes. Symptoms of heat-related illness include muscle cramps, weakness, nausea, and vomiting. If you have any of these, stop your workout right away, cool off, and hydrate.
If you're an outdoor person in warmer climates, your best bet is to run in the morning or evening, when temperatures are cooler. But even the early-morning hours in hot areas like Florida may be too hot for running. On hot days, consider moving your workout inside. You tend to burn more calories by running outside than on a treadmill, but you can always adjust the incline on the treadmill to increase the intensity of your workout. The scenery may not be as nice, but working out in a gym has its advantages, and you can add a little variety to your cardio routine by trying out other equipment, like the stair stepper or elliptical machine.