Need help crunching numbers

[Mikewood]

I have started working out at the gym and I need to drop some weight.
Right now I am 6'-3" 250% and measured 28% body fat.
I would like to get down to about 13-15% it's really ambitious I know.
My question is what weight is that? How do you compute it and loosing say 2lb a week how long before I reach it?
Thanks. Usually I am good at math but this has me stumped.

 

[scgstuff]

I didn't think body fat was a direct correalation to body weight. If I remember, muscle is more dense so weighs more than the same amount of fat. So I think you could stay the same weight and still reduce your waist size by building muslce. I know my weight has stayed pretty much the same for quite some time, but I am wearing larger waist pants (more fat, less muscle). I am determined to get that fixed, though, before buying all new clothes. I think that is why they measure the "amount of flab" when do body mass calculations.

 

[scap99]

Assuming that 28% body fat is a function of 250# total body weight, you have 70# of fat on you.
We could then determine that, in round numbers, 180# would be 0% body fat, and 211# is 15% body fat.

BUT you will probably be adding muscle instead of just cutting calories and carbs to get to this point, so the numbers above aren't good for anything but a math exercise. haha get it...math exercise.

 

[LJH]

math exercise.

 

[beaner]

loose weight with diet

so exercise and eat less/better

If you want to stay the same weight, exercise and eat more

 

[Liberty > Gooberment]

just focus on what you can control.. your diet and your work out. your body will do the rest.

 

[Radarscratch]

Eat Less, Move More ---- I that some kind of scam? Mad TV - Eat Less, Move More (Crista Flanagan) - YouTube

 

[ManCow]

28 lbs of fat is along of volume too. Density is about .9g for cubic centimeter. Again since is doesnt consider muscle gains this is just hypothetical.

The next question is how do we measure volume?


Something else to do, is think back to a time when you were in really good shape, say high school football or basketball or something like that, and see if you can remember what you weighed. Then just workout and eat and aim for that bodyweight

 

[scap99]

Bath tub. Archimedes. Eureka!

 

[ManCow]

Bath tub. Archimedes. Eureka!

Best. Throwback. Ever.

 

[scap99]

You googled it didn't you?

 

[winchster]

I have started working out at the gym and I need to drop some weight.
Right now I am 6'-3" 250% and measured 28% body fat.
I would like to get down to about 13-15% it's really ambitious I know.
My question is what weight is that? How do you compute it and loosing say 2lb a week how long before I reach it?
Thanks. Usually I am good at math but this has me stumped.

Here is the math.
Current.
250x.28= 70 lbs of fat
250-70=180 lbs lean body mass

Goal
250x.15=37.5
180+37.5=217.5 goal weight.

 

[ManCow]

You googled it didn't you?

Actually I had a chemistry teacher in college who made a very theatrical performance out of that lesson. It has stuck with me lol