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  1. #1
    Registered User chris4245's Avatar
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    how much does 5% of my body fat weigh?

    Im 137lb with a 14% body fat, if I want to reduce that to 9% body fat while maintaining my lean mass what will my end mass be? In other words, how heavy would 5% of my body fat at 137lb be? Thanks in advance.
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  2. #2
    Registered User Cuongpham's Avatar
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    Originally Posted by chris4245 View Post
    Im 137lb with a 14% body fat, if I want to reduce that to 9% body fat while maintaining my lean mass what will my end mass be? In other words, how heavy would 5% of my body fat at 137lb be? Thanks in advance.
    you would be lighter then my wife at 9% bf.
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  3. #3
    Banned CyberSheriff's Avatar
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    7 lbs of fat.

    You definitely should bulk first though. Also whats your height?
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  4. #4
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    Originally Posted by Cuongpham View Post
    you would be lighter then my wife at 9% bf.
    Get her a gym membership
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  5. #5
    Certified Autistic FeelTheFear's Avatar
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    Originally Posted by chris4245 View Post
    Im 137lb with a 14% body fat, if I want to reduce that to 9% body fat while maintaining my lean mass what will my end mass be? In other words, how heavy would 5% of my body fat at 137lb be? Thanks in advance.
    It doesn't exactly work like that, % changes as body mass changes. But you'll need to lose around

    omg I think I did it right (I suck at math) (just came up with this now but it makes sense)

    137 * 0.14 = 19.18 Fat

    Desired BF% = 9% = 0.09

    x = weight you need to lose, assuming it's all fat

    (137-x)(0.09) = (19.18 - x)

    12.33 - 0.09x = 19.18 - x

    x-0.09x = 6.85

    x = 6.85/(1-0.09)

    x = 7.53lbs
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  6. #6
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    Originally Posted by FeelTheFear View Post
    It doesn't exactly work like that, % changes as body mass changes. But you'll need to lose around

    omg I think I did it right (I suck at math)

    137 * 0.14 = 19.18 Fat

    Desired BF% = 9% = 0.09

    x = weight you need to lose, assuming it's all fat

    (137-x)(0.09) = (19.18 - x)

    12.33 - 0.09x = 19.18 - x

    x-0.09x = 6.85

    x = 6.85/(1-0.09)

    x = 7.53lbs
    you could have just

    137/100
    1.37*5
    = 6.85
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  7. #7
    Certified Autistic FeelTheFear's Avatar
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    Originally Posted by xSup3r View Post
    you could have just

    137/100
    1.37*5
    = 6.85

    intredasting... although if I hadn't set it up like that I wouldn't have known to do 6.85 / (1-0.09).

    I had no idea that (137*[BF%change])/(1-[final BF%]) would equal that.. mind ****ing blown
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  8. #8
    Banned PatFel's Avatar
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    Lol @ overcomplicated maths.

    Inaccurate in any case as you can't predict how much non-adipose body mass you would lose
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  9. #9
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    C'mon guys, just find 10% of 137 which is 13.7 and half it. no need for any calculations outside of simple mental arithmetic :/
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    Originally Posted by Cuongpham View Post
    you would be lighter then my wife at 9% bf.
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  11. #11
    Registered User chris4245's Avatar
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    Originally Posted by CyberSheriff View Post
    7 lbs of fat.

    You definitely should bulk first though. Also whats your height?
    im 5'7 and 17 yo, how much should I bulk till, cos I don't want to look too wide as that will make me look stumpy.. is 143lb good weight to stop bulking, any advice? thanks
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  12. #12
    Stay Aesthetic PMW's Avatar
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    Originally Posted by chris4245 View Post
    im 5'7 and 17 yo, how much should I bulk till, cos I don't want to look too wide as that will make me look stumpy.. is 143lb good weight to stop bulking, any advice? thanks
    Id go up to 160 and do heavy compound lifts to get a bigger frame and the mass. Just dont breakaway and become fat but keep your mindset on your final goal. Its a marathon not a sprint.
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  13. #13
    Registered User chris4245's Avatar
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    Originally Posted by PMW View Post
    Id go up to 160 and do heavy compound lifts to get a bigger frame and the mass. Just dont breakaway and become fat but keep your mindset on your final goal. Its a marathon not a sprint.
    alright thanks man, its normal that i can't see my abs right now right? cos i haven't started cutting..
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  14. #14
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    You ****ed up the wording in the title.

    5% of your bodyfat (19.18lbs) would be equivalent to .959lbs
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    6.8lb of fat to get to 137lb at 9% 6.8lb of muscle gain if you lost that with out gaining muscle you would lose water to Wen i had 26% fat got done to 85kg I still had 13% so half is water weight you lose so I lost 15kg fat with 15kg of water from 115kg to 85kg.
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