David C. Nieman
Description
Like an army of millions ready to defend its territory, the human immune system acts as the body's primary line of defense-a complex network of intera
...
cting cells that protects us from pathogens and other foreign substances. But many components of the immune system exhibit change after prolonged, heavy exertion, indicating that it is suppressed and stressed, albeit transiently, following prolonged endurance exercise.For marathon runners, distance swimmers and any other endurance athlete who undergoes repeated cycles of heavy exertion, a weakened immune system could lead to health compli
Read more