Calorie deficit going to my head: stupid BMI question

[perseph0ne]

I have maths a-level, but my brain has turned to mush. Does your BMI fall more quickly at higher weights or at lower weights? I should be able to work this out but I can't.

 

[babycake]

the speed of it falling is dependent on how much you loose each time. ie the higher the total weight the higher the BMI. i think

 

[perseph0ne]

That's not quite what I meant, I think. Because there's a square in the equation (m2) 6 lbs off would result in a different amount of BMI lost when you're at, say BMI 30, than if you're at BMI 20. I just can't work out whether it's more at a higher or lower weight, IYSWIM? I think your BMI falls faster if you're bigger and lose 6lbs but I'm not totally sure....

 

[totty]

Unfortunately your BMI falls quicker the lighter you are...

for example

If you were 10st 7lb = BMI 23
If you were 10st = BMI 21.5 (1.5 difference)

If you were 20st 7lb = BMI 44.5
If you were 20st = BMI 43.5 (1 difference)

:sigh:

 

[Mixxi]

I've wondered that myself before actually. How odd that the points go down quicker when your BMI is already healthy.

 

[Carolanski]

Its because when you weigh less - half a stone is a higher percentage of your body weight

At 20.5 stone (287lbs) - 7lbs = 2.44% of your body weight
at 10.5 stone (147lbs) - 7lbs = 4.76% of your body weight

Carol x

 

[perseph0ne]

Unfortunately your BMI falls quicker the lighter you are...

for example

If you were 10st 7lb = BMI 23
If you were 10st = BMI 21.5 (1.5 difference)

If you were 20st 7lb = BMI 44.5
If you were 20st = BMI 43.5 (1 difference)

:sigh:

Thank you!

Actually I don't mind that. I know I have a long way to go to get to "healthy" and I think it will spur me on knowing my BMI is dropping faster as I get closer to my goal.

 

[little*red]

Thanks for that explanation carolanski it all makes sense now .

 

[totty]

Its because when you weigh less - half a stone is a higher percentage of your body weight

At 20.5 stone (287lbs) - 7lbs = 2.44% of your body weight
at 10.5 stone (147lbs) - 7lbs = 4.76% of your body weight

Carol x

thats a better way of saying it lol x

 

[Mixxi]

Its because when you weigh less - half a stone is a higher percentage of your body weight

At 20.5 stone (287lbs) - 7lbs = 2.44% of your body weight
at 10.5 stone (147lbs) - 7lbs = 4.76% of your body weight

Carol x

Oh I get it now hehe thanks

 

[Dom1979]

Maths=pain

:giggle: