# Calorie deficit going to my head: stupid BMI question

#### 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

##### Full Member
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

##### Personal Trainer
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

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

#### Carolanski

##### Back to it!
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

##### Full Member
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

##### Don't worry, be happy :)
Thanks for that explanation carolanski it all makes sense now .

#### totty

##### Personal Trainer
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

##### Full Member
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

Maths=pain

:giggle: