You can lose water weight to the tune of 10 pounds and conclude that a low carb diet is superior. But of course, once you lost those ten pounds and start eating

You can lose water weight to the tune of 10 pounds and conclude that a low carb diet is superior. But of course, once you lost those ten pounds and start eating carbs again you'll regain them as your body replaces that glycogen and conclude that carbs are the devil. Just pinching your belly fat with a caliper every week and seeing the numbers go down is much more accurate. It doesn't matter what your body fat IS or how much it went down, as long as your caliper measurements decrease. For the record, my caliper measurements were something like 25/14/27 (belly/chest/thigh) at a high body fat (maybe 18%?) and more like 17/6/18 in the low teens. I didn't really see a point of actually trying to track my fat loss through caliper measurements because they were exaggerated, the calculators said I was higher bf% than I really was (19.3% but I wasn't that high), and then they said I was lower bf% than I really was after I lost it (12.1% but I wasn't that low). I only lost 10 lbs between a purported 7% change in BF from 200lbs to 190lbs. But as a measurement of "yep, losing fat", it's very accurate.