They aren’t moving. They’re not responding to touch or light. Their hearts aren’t beating. They’re no longer breathing. Their skin is ice-cold and hard to the touch. By that description, you probably don’t think I’m describing living things. However, there are some animals that survive like this because of a process called freeze tolerance. Unlike … Continue reading How Do Frogs Survive the Cold? By Freezing
Winter is here, and for much of the country, it’s going to stick around for a while. When exposure to frosty air and the constant hum of the heat pump continue for too long, you may end up with dry, itchy skin. We know that scratching an itch feels good, but why? Researchers studied brain … Continue reading Go Ahead and Scratch … Your Brain Is Telling You To
Winter officially begins next week with the winter solstice—the day of the year with the fewest hours of sunlight—on Dec. 21. With the cold weather and shorter days, you might be tempted to curl up under a blanket until the spring thaw. Whether you plan to hibernate or get outside to enjoy the chill, … Continue reading Bring on Winter! (But Stay Safe and Healthy)
As the days grow shorter, many animals, such as bats, bears and bees, begin getting ready to hibernate. It’s a process that allows animals to spend the winter months conserving energy by reducing metabolism, oxygen consumption and body temperature. So why don’t humans do it, too? Well, a new study suggests that some humans—specifically those … Continue reading Shhh … I’m Hibernating!
Have you ever had a morning where you just did not have the energy to go out for your five-mile run? What if you woke up in New York City and had to run to Miami? That is the distance Alaskan Huskies run every year at the annual Iditarod sled dog race. How these amazing … Continue reading Running a Thousand Miles Can Be Exhausting. How Do Iditarod Sled Dogs Do It?
Winter storms, like those that hit the East Coast in January, are often followed by sad reports of deaths from heart attacks related to winter weather. These reports often seem to be isolated incidents, but emerging evidence reveals a clear association between winter temperatures and heart attacks, particularly severe heart attacks. Recent research demonstrated that … Continue reading Don’t Be Cold-Hearted: Understand and Protect Yourself from the Cardiovascular Risks of Cold Weather
Flu season: It’s the time of year when many of us become acutely aware of anyone sniffling and sneezing nearby. We hope to avoid a brush with the virus, which can leave us feeling awful for a few days or a week or two, causing us to miss work and be unable to take care of … Continue reading Stack the Deck against the Flu
If temperatures in the teens (or the 50s for the warmer climates) make you grumble, be glad you’re not a mammal living in the Arctic or around Antarctica. These animals face much colder air temperatures of -40 to -76 degrees Fahrenheit. While humans bundle up with thick sweaters and jackets to get through the winter … Continue reading Too Cold Outside? Try Out Polar Mammals’ Methods of Staying Warm
I live in South Dakota where the winter days can be frigid and very dry. Many people, including me, have difficulty breathing while exercising in the winter because our airways temporarily narrow during exercise. This condition is called exercise-induced bronchoconstriction (EIB), formerly known as exercise-induced asthma, and it’s often triggered by working out in cold, … Continue reading Why Do You Gasp for Air on a Cold Winter’s Day?