Braving the cold for a workout: Is it worth the risk?
Even in the depths of winter, some dedicated athletes won't let frigid temperatures stop them from getting their daily dose of exercise. But is it safe to venture out into the cold?
The answer, according to experts, is not a simple yes or no.
Matt Barberio, an assistant professor at the Milken Institute School of Public Health, explains that there isn't a clear-cut temperature threshold where outdoor exercise becomes unsafe. However, certain individuals need to exercise caution.
"For those with respiratory conditions like asthma, the extremely dry air can exacerbate their symptoms," Barberio says. "It's important to consult with your doctor to determine what's best for your specific situation."
When it comes to cold weather, there are two main concerns: hypothermia and frostbite. Hypothermia occurs when the body's temperature drops below 95 degrees Fahrenheit. While exercising, the risk of hypothermia is lower, but if you sweat and your clothes get wet, staying outdoors for an extended period can be problematic.
"Pay attention to the air temperature, wind, and the 'feels-like' temperature," Barberio advises. "Layer up appropriately to prevent frostbite, especially on your hands and fingers. If you experience numbness or pain in your fingertips, it's time to head indoors."
A hat is a simple yet effective way to retain body heat during a run or bike ride, and it's easily removable if you start to overheat. Cycling can generate a lot of body heat, so it's important not to overdress. Listen to your body and adjust your layers accordingly.
But here's where it gets controversial...
Shoveling snow is a physical activity that can significantly increase the risk of a heart attack, according to Dr. Brian Choi, a professor of medicine at George Washington University.
"Snow shoveling is a uniquely challenging activity," Choi explains. "When people shovel snow, they often perform the Valsalva maneuver, which involves holding their breath and creating thoracic pressure."
In cases of cardiac infarction during shoveling, Barberio notes that these individuals often already have an underlying risk for heart attack.
"Aerobic activity, where you're getting a lot of oxygen and continuous movement, is the best kind of exercise for your heart," Choi says. "But heavy lifting, like shoveling wet snow, increases the resistance your heart has to pump against, which is the worst kind of activity for your heart."
So, is it worth the risk to shovel your own driveway or walkway?
Choi suggests considering hiring someone to do it for you, especially if you're not used to physical activity. There are plenty of people willing to earn some extra cash by taking on this task.
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