Austin-based holistic doctor Elena Villanueva, D.C., says the body’s natural way of “sweating out a cold” actually occurs when you develop a fever. She says as the body temperature rises, the virus is killed off. “Your body’s immune system will recognize the cold virus as foreign and launch an immune attack,” says Cutler. He continues that mild fever, production of mucus, and fatigue are all signs that your immune system is hard at work. However, both Cutler and Villanueva agree that working out more rigorously while dealing with a cold can make things worse. Cutler says that strenuous exercise “can cause you to sweat more, become more dehydrated, and expend energy on exercise instead of on fighting off the illness.” This particularly applies if you have a fever. “We want to allow the fever to occur so the body’s own immune system can do its thing to kill the virus.” And in case you were wondering if it’s safe to hit the gym, Villanueva answers that with a big fat no. Not only do you want to avoid spreading germs, but you should also do your best to stay home and rest if you’re feeling sick. In fact, one research review with 387 participants found heated, humidified air didn’t provide significant symptomatic relief for the common cold. If you insist on trying saunas for temporary relief, Villanueva notes, “Fluid loss is an important component to take into consideration.” To avoid dehydration from the heat and sweating, hydrate before, during, and after your hot room session. And like the gym, if your sauna or steam room of choice is a communal or public space, it’s best to stay home and fight off the cold naturally to avoid contaminating others.
