1-Min Read What’s different about people who never seem to get sick?

You definitely know someone like this: they smoke, drink, and never exercise, yet when the whole family goes down with a cold, they are completely fine. When you ask for their secret, they just say, "I guess I just have a good constitution," leaving you completely baffled.
What exactly is a "good constitution"? Can it be learned?
The answer is: for the most part, yes. Behind this "invincibility" is the overlay of four things: genetic foundation (around 25%), a rich immune memory (the more enemies it has seen, the stronger it gets), a low baseline of chronic inflammation, and just the right lifestyle habits. Out of these four things, at least three can be cultivated post-natally.