Average of 53... thats crazy but yeah it is all about lifestyle which has a massive effect on your lifespan. Plus modern advances in medicine 100 is an easy number to hit if you live right. Yeah I made the choice a few years ago. I had some very bad habits and sadly even addictions in my 20ies. But at 31 I have now healthier then ever before. Stopped smoking cigs and now on a vape which I hope to stop in the next year also. I work out but in all fairness not enough :P but its a process and something we all need to work on daily. One small step at a time and the journey will quickly begin.