> The real question: is there anyone out there that really debates that exercising constantly = better, longer life?
The real question is: how much better, how much longer? A priori any real-valued metric has a 50% chance of being net positive, but that doesn't mean the effect will be large enough to matter.
1h sports per week for 30 years means 7h * 52 * 30 = 10920h additional life. Equals to 1.25 additional years.
So for 30 years of exercise you get about 1 additionl year? I hoped for more :-P
I think it's not just the extra 1 year (assuming that much), but also the quality of life. I'd rather be a sprightly 80 yr old (sadly, I'm more than halfway there now), than chair/bed bound.
The real question is: how much better, how much longer? A priori any real-valued metric has a 50% chance of being net positive, but that doesn't mean the effect will be large enough to matter.