A few years ago I read a short biography about a famous theologian in the USA, Jonathan Edwards. In 1727, at the age of 21 he wrote a diet resolution for himself (which I think he pretty much kept to):
By a sparingness in diet, and eating as much as may be what is light and easy of digestion, I shall doubtless be able to think more clearly, and shall gain time; 1. By lengthening out my life; 2. Shall need less time for digestion, after meals; 3. Shall be able to study more closely, without injury to my health; 4. Shall need less time for sleep; 5. Shall more seldom be troubled with the head-ache.
I think he was way ahead of his time, and a little crazy too.
I wonder if any testers out there have ever started a diet or increased their exercise for the main purpose of finding more bugs!!!