We live once and therefore live one lifetime. You can try and extend your life through healthy lifestyle choices. But when we say "healthy lifestyle choices" we tend to only think in the physical realm (exercise, eat well, drink plenty of water, etc). We forget about the spiritual (mental) part of it. Not only can we get live multiple lifetimes by reading others' stories and perspectives, but reading itself has some significant positive impact on our lives (i.e. it is a healthy lifestyle choice).