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post #1 of 4 (permalink) Old 03-04-2004, 04:56 PM Thread Starter
Timmay
 
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Fatass

270 * .21 = 56.7
270-56.7 = 213.3
270 * .13 = 35.1
213.3 + 35.1 = 248.4
270 - 248.4 = 21.6 pounds

I have to lose 21.6 pounds to get to 13% body fat.

Here we go!

Last edited by Tiny Tim; 03-05-2004 at 06:08 AM.
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post #2 of 4 (permalink) Old 03-04-2004, 11:44 PM
 
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That's actually NOT how you go about figuring how to get to "13%", but allright.. check your numbers from line to line, too. Anyways, with your weight at 270 @ 21% Fat mass, which means 213.3 lbs of Lean Body Mass. If you were to drop off 21.6 lbs, that would of course put you at 248.4 lbs Total weight @ 13%, which would result in 216.11 lbs of Lean Body Mass. Which is actually better, since you will have gained a whole 2.81 of muscle.

There is a formula for figuring it out, the easy way. I just went with your numbers, to show you what you're trying to do, with what I know there.
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post #3 of 4 (permalink) Old 03-05-2004, 07:53 AM Thread Starter
Timmay
 
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close enough I just grabbed that off some website. Thanks for your input.
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post #4 of 4 (permalink) Old 03-05-2004, 01:27 PM
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mass * (1 - BF1 / BF2)

- >

270lb * (1 - 0.79 / 0.87) = 25lb
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