:48 and on that day I passed through the half at 1:47 and 25km at 2:09, which was also a PB. I think it works better for longer distances - I've done sub four minutes for 1K and 23 mins for 5K but never dipped under 48 for 10K. I can run fast for short distances
% of fat = 10lbs, then you'd have to have 1,000lbs of fat - which seems unlikely. And if 1% = 1lb, then you must have 100lbs of fat, which also seems unlikely. Stop worrying about percentages. If your clothes are looser and you feel better then it's working
