A growing body of research is showing that regular exercise—as simple as a brisk 30- to 45-minute walk five times a week—can boost the body’s immune system, increasing the circulation of natural killer cells that fight off viruses and bacteria. And exercise has been shown to improve the body’s response to the influenza vaccine, making it more effective at keeping the virus at bay.As you can see the recommendations of Dr. David Nieman, director of Appalachian State University’s Human Performance Lab in Kannapolis are quite moderate. Here one of his quotes published in the Wall Street Journal:
“No pill or nutritional supplement has the power of near-daily moderate activity in lowering the number of sick days people take,” says David Nieman, N.C. Dr. Nieman has conducted several randomized controlled studies showing that people who walked briskly for 45 minutes, five days a week over 12 to 15 weeks had fewer and less severe upper respiratory tract infections, such as colds and flu. These subjects reduced their number of sick days 25% to 50% compared with sedentary control subjects, he says.
But there are other studies that show how easy you can overdo it and provoke an impaired immunity.
There is also evidence that too much intense exercise can reduce immunity. Research is showing that more than 90 minutes of high-intensity endurance exercise can make athletes susceptible to illness for up to 72 hours after the exercise session. This is important information for those who compete in longer events such as marathons or triathlons.
Intense exercise seems to cause a temporary decrease in immune system function. Research has found that during intense physical exertion, the body produces certain hormones that temporarily lower immunity.
Cortisol and adrenaline, known as the stress hormones, raise blood pressure and cholesterol levels and suppress the immune system. This effect has been linked to the increased susceptibility to infection in endurance athletes after extreme exercise (such as marathon running or Ironman-distance triathlon training).
This data is clearly indicating why biestmilch/colostrum as a unique immune strengthening substance is justified in endurance sports, and nothing to laugh about. Yes, this still happens which is strange because biestmilch is detrimental for mammals to survive the first weeks after birth, actually nothing to ridicule.
