This is no fad study. Each of the suggestions outlined in this book has been proven by an overwhelming number of tests, trials, and studies to increase health and lifespan. There are no gimmicks, no catches, no ifs, ands, or buts. So what are the five, deceptively simple behaviours every human body needs to thrive? Drink coffee, exercise regularly, add nuts to your diet, make certain you get enough vitamin D, and meditate regularly, even if only for short intervals.