I never read that about physiological impossibility of losing more than 2 lbs. of fat a week. Really? I know it wasn't muscle, or similarily dense body parts, since I used to float, but don't anymore. To my knowledge, the only thing that does that is the loss of fat (or shall I say stored carbos). If I lost water, it would be an even trade or I would shift slightly to more bouyant, and if it were bone density, I would go more bouyant. If it were muscle, the results would even be more significant. I also wonder if this physiological effect is somewhat dependent on how overweight you are or what size your body is. Is it dependent on the size of your kidneys or liver or pancreas, or some such thing? I drank abundant water before and after induction cycle, and obtained a 15 lb drop in 16 days. I might have lost 1 lb of lean tissue, maybe 1 or 2 lbs. of water, though I don't know how. That still left 12-13 lbs in 16 days, and lost bouyancy too.