i think cyclists use a similar argument.
do they live to a ripe old age?
off topic slightly, a good friend of mine is a cyclist and he had to have an operation because of an ingrowing arse hair.
apparently it is not uncommon because of the friction of the saddle.
anyroad, i've had a long walk today, i don't measure shit but i'd guess maybe 6 miles in 3 hours.
at no stage did my heart rate lead to breathlessness and pain.
my mental health and wellbeing were improved,
which in itself reportedly leads to a longer better life.
i also had 5 minutes talking to a horse who wanted to be my friend because he could smell the apple in my pocket.
did you know that when you get close to a horse for a short time the horse's heartbeat synchronises to the same as your heartbeat.
i'm checking my pulse now and it's about 50-55 so if you ran today you definitely used up more of your heartbeats than i did and mine will slow down even further due to the rioja starting to flow through my veins.
each to their own, but all i see on the faces of people who run is pain.