[SamAdams76]

This theory is not as wacky as it sounds. Take vaccines for example: A vaccine is simply the very disease you want to innoculate yourself from - only in a small amount. For example, a smallpox vaccination consists of a small dose of smallpox itself. The body is thus able to handle this small dose and develop resistance to it so that a full-blown case further down the road is avoided.

[Route66]

I don't doubt this either. I guess there may be more truth than we knew to the old saying "That which does not kill us makes us stronger."