You will gain more health benefits because your training the muscles to be under stress.
Long-time activities, such as a long running(or the Pacer Test), swimming, and biking.
Hope this helps! :)
So its acquired immunity and the cells responsible are the B lymphocytes that produces antibodies against the virus. Memory is keep since first encounter of the virus by the immune system by way of the antibodies that was initially produced. The antibodies are there already, which makes it fast to act upon when expose again.
