Well finally some proof that we shouldn't be exercising soo much

[MuscleScience]

Hotter the flame the faster it consumes. I don't see it as scientifically explained but rather a given law.

What if we all have a predetermined amout of energy we can expend before death? Such as a candle...
Burning you candle at both ends = improper medical maitenance.
I believe we all have a final expenditure total. Are you fast and hard or slow and steady? I also dont think we control it much at all in the grand scheme.

There is a universal limit on cardiac muscle and how many times it can beat before failure. I think the number is like 2 billion beats. Pretty much goes for all higher organisms.