One day my friend Jake hopped onto his bicycle and, like he had done many times before, my good friend and "weekend warrior" entered himself into a long-distance racing event. The event was to last seven days. But Jake never made it to the end of the first day. He suffered a massive heart attack and died before reaching the hospital. He was 63 years of age. When I heard the news I was as shocked as anyone. I am no stranger to death, but when someone with vitality is suddenly snatched away like this it is a sombre reminder that no-one is immune to the laws of biology, and that we take our fate in our hands every single day that we take our health for granted. I do not know what killed Jake that day. Many factors might have contributed. Stress, diet, high blood pressure coupled with poor medical intervention, or none at all... Who knows? But I can say two things with some degree of certainty. ...