The currently accepted value for the half-life of 14C is 5,730 years. This means that after 5,730 years, only half of the initial 14C will remain; a quarter will remain after 11,460 years; an eighth after 17,190 years; and so on.
<span>The most affected organelles are the mitochondria. Since the movement is energy mitochondria provide the energy needed for the muscle tissue contraction using up ATP in the process. And since oxygen is needed for the production of ATP when consumption of ATP is ramped up it also needs more oxygen to replenish the ATP consumed in exercise. Hence the accelerated breath.</span>
