The Hidden Risk of Intense Exercise: Impact on Immune System Revealed

A study published in the journal Military Medical Research suggests that excessive exercise may increase the risk of viral respiratory infections. Researchers found that individuals who are very fit may be more prone to such infections immediately after vigorous exercise due to reduced inflammatory activity. The study examined the blood plasma, urine, and saliva of 11 firefighters before and after 45 minutes of intense exercise, revealing a decrease in inflammatory molecules and an increase in Opiorphin, which may improve blood flow to muscles. The findings could help reduce the risk of strenuous exercise for first responders, athletes, and military personnel.