That's impressive - I reckon if I ate that I'd cease to exist. Or at the very least be extremely unpleasant to be around.
Free-time rears it's head as a differing factor, I manage 6 evenings in the gym in sport off-season. If I get round to building a house/having a family I wonder how badly my body would cope with simply not having the time to get training done. Priorities shift and belly expands.
Well that's a depressing link - although I'll take some hope from my low resting heart rate and try and tell myself it's working in my favour!