Hey, I saw that doco as well - it was quite good. When they showed the fat in the blood I was a little surprised as well. However, I questioned that just because there was fat in the blood, does it really mean anything? There was no clear explanation of what type of fat it was or any evidence of where it went and if it was good/bad. They sort of just made the assumption it would turn into fatty tissue. I suppose the main take away from that segment was that when exercising regularly less fat will be absorbed in you bloodstream.