help with math please
- Thread starter RJAZ520
- Start date
Doc Bunkum
New member
If you weigh 180 lbs now and are 18% bf, that means you're carrying 157.5 pounds of lean and 32.5 pounds of fat.
So if you wanted to get to 9% bf, that would simply be half of what you have now - 16 lbs or so.
But I think what you're really asking is if I weigh 180 lbs now and am 18% bf, how much would I weigh if I dropped my bf to 9%?
In that case, the formula is: Target Weight = LBM (lean body mass) divided by (1 - desired body fat as a decimal).
In other words, 157.5 divided by 1 - .09 = 173 lbs.
What that's saying is if you train and eat properly, and lower your bf to the 9% range, your body weight should be close to 173 lbs.
So if you wanted to get to 9% bf, that would simply be half of what you have now - 16 lbs or so.
But I think what you're really asking is if I weigh 180 lbs now and am 18% bf, how much would I weigh if I dropped my bf to 9%?
In that case, the formula is: Target Weight = LBM (lean body mass) divided by (1 - desired body fat as a decimal).
In other words, 157.5 divided by 1 - .09 = 173 lbs.
What that's saying is if you train and eat properly, and lower your bf to the 9% range, your body weight should be close to 173 lbs.
wicked witch
New member
Hmmm… I would start the same way as You …
18%*180lbs =32.4lbs - that is the weight of your fat
Now we have to find out what your LBM is :
LBM=180-32.4=147.6lbs
Then assuming that LBM=constant
147.6(LBM) + 9%*147.6(9%BF)=160.9lbs (RJAZ520
)
So to get to 9%BF you would have to lose about 19lbs .
But from what I’ve read here it’s impossible to lose only fat. You will always lose some mussels with it. I don’t know exactly how much for each lb …
Even though this calculation is wrong I had real fun thinking about it – thanks
PS
Good luck with that last 0.8lb !!!!
18%*180lbs =32.4lbs - that is the weight of your fat
Now we have to find out what your LBM is :
LBM=180-32.4=147.6lbs
Then assuming that LBM=constant
147.6(LBM) + 9%*147.6(9%BF)=160.9lbs (RJAZ520
)So to get to 9%BF you would have to lose about 19lbs .
But from what I’ve read here it’s impossible to lose only fat. You will always lose some mussels with it. I don’t know exactly how much for each lb …
Even though this calculation is wrong I had real fun thinking about it – thanks
PS
Good luck with that last 0.8lb !!!!
Doc Bunkum
New member
Of course, the above calculations were simply an exercise in mathematics.
Getting down to single digit bf levels is not easy - and not desirable for the average person.
Unless you were a well conditioned athlete you'd likely lose a great deal of muscle if you tried this by dieting alone.
Even a well muscled person would lose some lbm getting to single digits.
But the flip side is, the illusion of chiseled muscle would make you'd look larger.
Getting down to single digit bf levels is not easy - and not desirable for the average person.
Unless you were a well conditioned athlete you'd likely lose a great deal of muscle if you tried this by dieting alone.
Even a well muscled person would lose some lbm getting to single digits.
But the flip side is, the illusion of chiseled muscle would make you'd look larger.
RJAZ520
New member
oh... i'm far from the average dieter
Im very calculated track everything i eat. Train very hard and very heavy to counteract muscle loss.
I have had some great guidance from Steve on how to best preserve muscle.
I realize some muscle loss is going to happen. But im doing everything i can to keep it very minimal.
I have the mentality, desirre, and dedication of an elite athlete. Just workin on getting my body there
Im very calculated track everything i eat. Train very hard and very heavy to counteract muscle loss.
I have had some great guidance from Steve on how to best preserve muscle.
I realize some muscle loss is going to happen. But im doing everything i can to keep it very minimal.
I have the mentality, desirre, and dedication of an elite athlete. Just workin on getting my body there