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/sci/ - Science & Math

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10609018 No.10609018 [Reply] [Original]

BMI=weight/heightxheight

Why isn't it weight/height? What does squaring height do something that is functionally important?

Please explain.

>> No.10609020

>>10609018
Thicc

>> No.10609022

>>10609018
What happened to Japan?

>> No.10609028

>>10609018
https://en.wikipedia.org/wiki/Square%E2%80%93cube_law

>> No.10609029

>>10609028
Well then shouldn't it be height cubed?

>> No.10609034

>>10609029
Do the unit conversion and ask yourself what BMI is trying to measure.

>> No.10609087

>>10609018
Basically they think weight increases nonlinearly with height. So ratio between weight/height of someone 5'6 would be less than the ratio for someone 5'7 everything else being equal

>> No.10609120

>>10609018
it is weight/(heightxheight)

>> No.10609261

>>10609018
https://twitter.com/hasamaretai_

yw lads

>> No.10609270
File: 77 KB, 891x717, 1556661017900.jpg [View same] [iqdb] [saucenao] [google]
10609270

>>10609261

>> No.10609292

a person who is twice as tall who was still proportionally the same would also need to be twice as thicc

>> No.10609315

>>10609261
wow im not even into fat chicks but some of em were kinda cute ngl

>> No.10610212

BMI is a meme. I'm less bf% than most of the earth's population but because muscle is heavy I'm considered obese. This is true for almost every powerlifter/bodybuilder.

>> No.10610220

>>10609018
>>10610212
The main use of BMI is to give doctors a number they can point to when telling people they're too fat or too thin. They are often delusional in some way (e.g. anorexia) and pointing out "your bmi is way over here on the chart where it says DANGER DANGER" helps a lot with that.

>> No.10610271

>>10610212
Why can't I build muscle? I have tried everything

>> No.10610288

>>10610212

BMI is fine for 99% of the population. It fails for body-builders, but that doesn't make it bad or not useful.

>> No.10611053

>>10610271
I'd pin it down to either you legit have some medical problem where you're lacking certain enzymes or you're not actually routinely lifting weights.

Also, bad sleep, and not eating enough will limit recovery, although you should still see muscle gains just not as efficient. It takes a few months dedication to really see a difference too. I'd suggest before and after pictures if your mind seems to adapt to subtle changes over time and you can't notice a difference, but at least with hard evidence you can be like ye I definitely gained more muscle mass.

>> No.10611440

>>10611053
How can I fix the enzyme thing? My life has no meaning without muscle

>> No.10611446

>>10610212
>>10610288
A high BMI is unhealthy regardless of body composition. It is total body mass, not fat mass alone, that is harmful to many of the body's organs.