What a crock

I've long suspected that my digital BF% Scales are not as accurate as they could be, not for digital scales which, one would assume, should be quite accurate.

Although I don't believe in them yesterday could be considered my "cheat day". Liz drove into downtown to join me for lunch and we ended up at the Eastside Market where I consumed an entire sausage & meatball sandwich. I've been pretty good for the last few weeks and my voluntary commute change means I now walk 2 miles to work and back, plus daily workouts on the Wii Fit, so it's not like I undid the past few weeks work.

This morning, post workout, I weighed 185 lbs. I got dressed, shorts & t-shirt, then weighed myself again. 187 lbs. Really? Okay, I'll take your word for it. I hit the button to measure my Body Fat (allegedly via Bioimpedance) and the scales said I was at 22%.

I'm sorry. 22%? Yesterday, at 182 lbs, you said I was at 20%. Now, I weigh 5 lbs more and you say I'm back up to 22%? I decided to conduct a very simple test, grabbed a 5 lb weight and my two 10 lb dumbbells, and returned to the scales. With 5 lb weight in hand I stepped on and now I weighed 192 lbs. Ok, fair enough. I stepped off, grabbed my two 10 lb weighs and stepped back on.

209 lbs.

I see.

I hit the button to measure my body fat, the scale ran it's alleged bio-impedance test and a few seconds later the number 27 appeared on the screen.

Really?

Because while I might "weigh" 20 lbs more than before, I'm pretty sure that's not an extra 20 lbs of fat, so my body fat percentage should have not changed. In fact, if anything, it should have gone down, because now the fat-to-weight ratio has decreased...or increased, depending on how you look at it.

So the Body Fat Calculator doesn't really calculate your actual body fat via bio-impedance but simply goes off your height and weight. What a fucking crock.

I also know the scales are not entirely accurate either. I can weigh myself prior to using the toilet, then immediately afterward, and the scales will give me the same weight. I can drink a large glass of water between weighings and the scales will tell me no change.

FWIW, this was a Taylor Body Fat Analyzer & Scale, Model #5564, which are no longer available.

If you have a combination Scale & BFA, I'd like to ask you to conduct this simple test and post the results in my Comments section. Weigh yourself and calculate your BF%, then weigh yourself again while holding a heavy item. Does your BF% change? If so, which way?