Are These Numbers Right? View Comments
Today’s Weigh-In: 371.4 pounds
I got my physical size measurements and body fat percentages calculated this weekend (along with trying to get sold into supplements and a $300 caloric counter at 24 Hour Fitness. Worthless trainers…). As it turns out, at 370 pounds, I am at 28% body fat. It’s not great by any means, but I was expecting a much higher number somewhere in the 30s. If the numbers taken and calculated by the trainer are correct, then my Lean Body Mass is somewhere around the 265ish mark (and according to my calculator, 266.4 pounds): There is no way that can be right, can it? I know I’m tall and have a big frame regardless, but that can’t be right. Even the trainer was stunned – so stunned he ran the numbers twice. Both times, 28%.
Total Weight * (1-BF%) = Lean Body Mass
370 * (1 - .28) = 266.4
Well, let’s just go with it for the time being.
I have two primary body fat goals I am working towards: 25% and 15%. According to some charts I’ve seen at the gym, under 26% is considered an “acceptable” percentage for men. 15% is in the middle of the “fit” range. I would be thrilled to be in that range.
I’ve been crunching some numbers based on that percentage, and I’m so surprised I’m sure something is off with my figures. I could use some help.
Acceptable at 25%
At 25% body fat, a quarter of my Total Weight will be fat, and three-quarters will be my LBM
LBM = (1 - .BF%) * Total Weight
266.4 = .75 * Total Weight
355.2 = Total Weight
Fit at 15%
LBM = (1 - .BF%) * Total Weight
266.4 = .85 * Total Weight
313.4 = Total Weight
That Can’t Be Right
Do those numbers just generally sound off to anybody else than me? Because 313 still sounds like a fat guy to me. But then again, I see video of Jesse Marunde from the World’s Strongest Man competitions. He’s 6’4″ and clocked in at 320, and he looks thin as can be – with a good amount of muscle packed on, too. So, I could very well be wrong and the error is only in my thinking.
Still, until I get someone else to verify it or diss my pitiful math skills, I figure my numbers must be off somehow. Math has never, ever, EVER been my strong suit, so it’s perfectly likely that I’ve just done some crazy math that doesn’t actually make sense.
Or, it could be that my Lean Body Mass will decrease as well, both that doesn’t logically seem to make sense.
Help, please!