I do at least 12 a day. With a good set of calipers and the same person doing it the # come out very close. The reason is you get to know the person. They hit the same spots all the time, and they are very accurate. I've had clients go to a hospital, been dunked and the % #'s are so close that at the most they will vary is a point or 2. That scale that gives a readout with electrical waves has never been on. Like previously said too many variables. The beat way is get the same person, know their credential, and check the new readings against the last. All points measured should correspond with your weight loss/gain and you know if it's muscle or fat. I use Skyndex, they cost almost 500 bucks, so they better be right
