canon,you are gonna kill yourself.
Just eat properly and eat less.
Walk that 10 miles,dont run.
As far as the amount of heartbeats goes,
I think our bodies are like cars.The pistons
firing are like heartbeats.If you use cheap
fuel and run the engine at 8000 rpm,(like
you plan on doing)its components will eventually
break down.(do you really want a valve job?)
Some people are born as fiats,some are vipers,
but god usually makes us a nice dependable
vehicle,like a VW beetle or a BMW .
Youll be fine if you just use clean fuel,change
your oil frequently,and rotate your tires every
10,000 miles.