So scientifically, when does the fat come off?

Mr_Knight wrote: »

christinev297 wrote: »

I do alternate day fasting.

Ah....that seems to correlate with days you yell at me....

:drinker:

Oh hush I am not HANGRY hehe xx

Your body is actually processing fat (and other stuff) all the time. When the rate at which it is using fat exceeds the rate at which it is storing fat, you lose weight. When you have a calorie deficit, the body lacks the materials it needs to store fat, so it doesn't store as much, even though you continue to use fat at an even higher rate because you don't have as much food in your stomach to get energy from.

I can't say I've ever studied my pee that closely lol

concordancia wrote: »

I once learned on these here fora that you pee it out and it looks like chicken fat floating in the toilet.

I believe that thread was referring to ketone bodies. Ketones are made when your body uses fat for energy. I've had a ketone level of "4" (my Dr. says that is the highest that the blood test she sent me for measures), but I've never seen oil floating on my pee. I can, however, smell the acetone when I am in ketosis. My urine tends to be darker at that time, even though I drink a lot of water (ketosis makes me thirsty). The body is not good at putting excess ketones back into fat, once they are made, so they get excreted in the urine. Some people also have "fruity" breath from the acetone. So, some fat ends up being peed out, and some you breathe out.

You burn fat when you run out of glucose. So, if I eat a 300 calorie breakfast, then burn 350 calories in a jog, the 50 extra calories came from fat. I would then continue to burn fat until I ate again, at which point I would switch back to using glucose until all the meal has been digested and used up. In a calorie deficit, you probably start each day without a lot of glucose left to burn. On the other hand, when you convert the food you digest to glucose, anything that isn't used right away, or stored in your muscles, is put into fat cells by insulin. So, throughout the day, and night, you are switching from burning to making fat, and back again.

ana3067 wrote: »

Aemely wrote: »

970Mikaela1 wrote: »

Mine is mostly on Tuesday.

Ha-ha!

Glad I'm not the only one who thought of Adipose lol

Your question made me curious. I learned something I didn't know before, so thanks:

"Exercise and diet can help you lose weight by creating a calorie deficit. Your body will begin to break down stored fat through a series of complicated metabolic pathways. The byproducts of fat metabolism are expelled through your lungs, sweat and urine, while the energy liberated from fat is used to maintain your body's biological function."

http://www.livestrong.com/article/325306-how-does-fat-leave-your-body-when-you-lose-weight/

So, I guess the answer to your question is that the fat comes out when your body runs out of nutrients from your food, and has to tap into the fat reserves. The free fatty acids are liberated from your fat cells, and used for energy. The byproducts are released through your sweat, urine, and breath.

chicken fat floating....oops. . . bad kitty

cwolfman13 wrote: »

Your body is constantly either storing or oxidizing fat...

exactly.

you burn fat all the time. when you're sleeping, your body is using fat as fuel. as long as you don't overeat your calories (and thereby storing fat), you're burning fat.

if you exercise, there will be an increase in fat burning when you begin the exercise, and for some time afterward before your body goes back to "normal".

christinev297 wrote: »

I do alternate day fasting. I never lose weight after a fast day, it's always 2 days later after a normal eating day.

That's interesting, because I almost always lose scale weight after a fast day.

Do you mean a true fast, as in nothing but water, or a low calorie day called a "fast day" in IF circles?

Burt_Huttz wrote: »

You seek a simple answer to a complex question:

I just vomited in my mouth a little. Reminds me of college