Can exercise strengthen my immune system?

Exercise prevents the immune system from aging. Physical activity affects you even at the cellular level. It reduces the rate at which your cells age, meaning that you are less likely to develop cancers, and that any microscopic cancers you already have are less likely to spread.

Exercise also improves the overall functioning of the immune system, increasing the production of "watchdog" cells that seek out and destroy invading disease cells and cancer cells. Those who are physically fit have fewer serious infections, cancers, and even colds.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.