Some researchers suspect sauna heat reduces symptoms because it improves drainage, while others speculate that the high temperatures help weaken cold and flu viruses. Why this might prevent sickness in the first place, however, is unclear. But research suggests an effect. -The Claim: Sitting in a Sauna Can Relieve Cold Symptoms
MY COMMENT: I've got a cold-no fever but I am really stuffed up. Headed out for a slow run, then into Camp Humphreys to toast in the Super Gym sauna!
My experience is that saunas work great to help kill a cold before it starts. If you don't have access to a sauna, a hot bath with a hot cup of herbal tea (such as Gypsy Cold Care by Traditional Medicinals) works too.
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