Heat and exercise: Keeping cool in hot weather

Stay safe during hot-weather exercise by drinking enough fluids, wearing proper clothing and timing your workout to avoid extreme heat.

By Mayo Clinic staff

Whether you’re running, playing a pickup game of basketball or going for a power walk, take care when the temperatures rise. If you exercise outdoors in hot weather, use these common-sense precautions to prevent heat-related illnesses.

How heat affects your body

Exercising in hot weather puts extra stress on your body. If you don’t take care when exercising in the heat, you risk serious illness. Both the exercise itself and the air temperature increase your core body temperature. To help cool itself, your body sends more blood to circulate through your skin. This leaves less blood for your muscles, which in turn increases your heart rate. If the humidity also is high, your body faces added stress because sweat doesn’t readily evaporate from your skin. That pushes your body temperature even higher.

Heat-related illness

Under normal conditions, your skin, blood vessels and perspiration level adjust to the heat. But these natural cooling systems may fail if you’re exposed to high temperatures and humidity for too long, you sweat heavily and you don’t drink enough fluids. The result may be a heat-related illness. Heat-related illnesses occur along a spectrum, starting out mild but worsening if left untreated. Heat illnesses include:

• Heat cramps. Heat cramps are painful muscle contractions, mainly affecting the calves, quadriceps and abdominals. Affected muscles may feel firm to the touch. Your body temperature may be normal.
• Heat exhaustion. With heat exhaustion, your body temperature rises as high as 104 F (40 C) and you may experience nausea, vomiting, headache, fainting, weakness and cold, clammy skin. If left untreated, this can lead to heatstroke.
• Heatstroke. Heatstroke is a life-threatening emergency condition that occurs when your body temperature is greater than 104 F (40 C). Your skin may be hot, but your body may stop sweating to help cool itself. You may develop confusion and irritability. You need immediate medical attention to prevent brain damage, organ failure or even death

Do toning shoes really work?

from Edward R. Laskowski, M.D.

Despite the claims, there is no convincing evidence that wearing toning shoes will make your legs more toned or cause you to burn extra calories.

Toning shoes are designed to simulate walking barefoot or walking on an uneven surface. Manufacturers say the unstable design of the shoes forces wearers to use their leg muscles more — which burns more calories and tones the muscles. However, an independent study by a nonprofit fitness organization found no evidence that wearing toning shoes leads to improved muscle tone or greater energy expenditure. In addition, there are no studies that prove that they improve balance or stability to a great degree.

If you like the way toning shoes look and find them comfortable and not too unstable, there’s probably no harm in trying a pair. And if you increase your activity as a result, you’ll benefit your overall health.

Is it OK to exercise if I have a cold?

Mild to moderate physical activity is usually OK if you have a garden-variety cold and no fever. Exercise may even help you feel better by opening your nasal passages and temporarily relieving nasal congestion.

As a general guide for exercise and illness, consider this:

• Exercise is usually OK if your signs and symptoms are all “above the neck” — symptoms you may have with a common cold, such as runny nose, nasal congestion, sneezing or minor sore throat. Consider reducing the intensity and length of your workout, though, or you may feel worse. Instead of going for a run, take a walk, for example.
• Don’t exercise if your signs and symptoms are “below the neck” — such as chest congestion, hacking cough or upset stomach.
• Don’t exercise if you have a fever, fatigue or widespread muscle aches.

Let your body be your guide. If you have a cold and feel miserable, take a break. Scaling back or taking a few days off from exercise when you’re sick shouldn’t affect your performance. Resume your normal workout routine gradually as you begin to feel better. And check with your doctor if you aren’t sure if it’s OK to exercise.

Remember if you do choose to exercise when you’re sick, reduce the intensity and length of your workout. If you attempt to exercise at your normal intensity when you have more than a simple cold, you could risk more serious injury or illness.

Courtesy of mayoclinic.com

Benefits of Exercise- No. 7: Exercise can be fun

Exercise and physical activity can be a fun way to spend some time. It gives you a chance to unwind, enjoy the outdoors or simply engage in activities that make you happy. Physical activity can also help you connect with family or friends in a fun social setting. So, take a dance class, hit the hiking trails or join a soccer team. Find a physical activity you enjoy, and just do it. If you get bored, try something new.

Courtesy of mayoclinic.com

Benefits of Exercise- No. 6: Exercise puts the spark back into your sex life

Do you feel too tired or too out of shape to enjoy physical intimacy? Regular physical activity can leave you feeling energized and looking better, which may have a positive effect on your sex life. But there’s more to it than that. Regular physical activity can lead to enhanced arousal for women. And men who exercise regularly are less likely to have problems with erectile dysfunction than are men who don’t exercise.

Courtesy of mayoclinic.com

Benefits of Exercise- No. 5: Exercise promotes better sleep

Struggling to fall asleep? Or to stay asleep? Regular physical activity can help you fall asleep faster and deepen your sleep. Just don’t exercise too close to bedtime, or you may be too energized to fall asleep.

Courtesy of mayoclinic.com

Benefits of Exercise- No. 4: Exercise boosts energy

Winded by grocery shopping or household chores? Regular physical activity can improve your muscle strength and boost your endurance. Exercise and physical activity deliver oxygen and nutrients to your tissues and help your cardiovascular system work more efficiently. And when your heart and lungs work more efficiently, you have more energy to go about your daily chores.

Benefits of Exercise- No. 3: Exercise improves mood

Need an emotional lift? Or need to blow off some steam after a stressful day? A workout at the gym or a brisk 30-minute walk can help. Physical activity stimulates various brain chemicals that may leave you feeling happier and more relaxed. You may also feel better about your appearance and yourself when you exercise regularly, which can boost your confidence and improve your self-esteem.

Courtesy of mayoclinic.com

Benefits of Exercise- No. 2: Exercise combats health conditions and diseases

Worried about heart disease? Hoping to prevent high blood pressure? No matter what your current weight, being active boosts high-density lipoprotein (HDL), or “good,” cholesterol and decreases unhealthy triglycerides. This one-two punch keeps your blood flowing smoothly, which decreases your risk of cardiovascular diseases. In fact, regular physical activity can help you prevent or manage a wide range of health problems and concerns, including stroke, metabolic syndrome, type 2 diabetes, depression, certain types of cancer, arthritis and falls.

Courtesy of mayoclinic.com

 

Benefits of Exercise- No. 1: Exercise controls weight

Exercise can help prevent excess weight gain or help maintain weight loss. When you engage in physical activity, you burn calories. The more intense the activity, the more calories you burn. You don’t need to set aside large chunks of time for exercise to reap weight-loss benefits. If you can’t do an actual workout, get more active throughout the day in simple ways — by taking the stairs instead of the elevator or revving up your household chores.]

Courtesy of mayoclinic.com