1.) From my understandings one of the benefits of exercising is, that it actually kills the unfit mitochondria in the cells trough the exess amount of ROS. Thus leaving the more fit mitochondria behind, which then will produce their "offspring".
2.) C60 is a scavenger hunter, yes, but it seems that the major benefit is, that it changes the charge of mitochondria membrane, so that it is better protected from outside influence in the first place.
IF (!!!) both off these assumptions are correct, wouldnt it be better for an unfit individual (like me), to do some high intensity workouts/cardio before starting with the C60 regime? Otherwise it could protect some rather unfit mitochondria for some time.