Fighting is nonsense, guys!
There's myriads of factors. A (reasonable) healthy life style is good, I can't understand that anybody dicuss that. (technically fundamental)
But of course, your healthy style isn't gonna be of any help if you live by a nuclear powerplant, have frequent sex with cocodriles, you have any genetic problem, you got the bad luck of be hit by a terrible disease, a ray fall on you, or simply God considers that it's time for you to leave.
We're talking about a "life style", not a magical artefact that protect you.
And there's no doubt that follow some healthy rules will help you to feel better, look better and perform better in a physical and mental sense.
It'll improve your trading. Or your chances to marry a wealthy girl
So, be optimist and let your inner energy flow free and pure!