Seriously, not too sound stupid but where does weight go when u lose it?

Answer 1

Here's the scientific answer to what happens when you burn body fat:

When stored body fat is burned for energy, the fat cell (also called an adipocyte) does not go anywhere or "move into the muscle cell", as is sometimes suggested (although that's not too far off). Unfortunately, the fat cell stays right where it is - on top of your muscles and under the skin in your thighs, stomach, hips, arms, etc. What happens is the fat cell simply releases its contents into the bloodstream as free fatty acids (FFA's).

When the FFA's are released from the fat cell, the fat cell shrinks and that's why you look leaner when you lose body fat - because the fat cell is now smaller. A small or "empty" fat cell is what you want.

Each of us inherits a pre-determined number of fat cells. This number may increase, especially through the growing childhood and teenage years, but it cannot decrease, except though such drastic (and dangerous) measures as liposuction.

What does change frequently is the SIZE of the fat cell. Body fat is basically just a reserve source of energy. The fat cell is the storage depot for this energy in the form of triglycerides (fat). The cell grows or shrinks in size depending on how "filled" it is.

Picture a balloon that is not inflated: It's tiny when not filled with air - maybe the size of your thumb. When you blow it up with air, it can expand 10 or 20 times it's normal size, because it simply fills up. That's what happens to fat cells: They start nearly empty (when you are lean), and when energy intake exceeds your needs, your fat cells "blow up" like balloons. (not a pretty picture, is it?)

When your energy needs exceed your intake, your body releases hormones and enzymes that signal your fat cells to release fat instead of keeping it in storage. Then the stored fat (energy) gets released into your bloodstream as FFA's and they are shuttled off to the muscles where the energy is needed. As blood flow increases to the active muscles, more FFA's are delivered to the muscles that need them.

An important enzyme called lipopoprotein lipase (LPL), then helps the FFA's get inside the mitochondria of the muscle cell, where the FFA's can be burned for energy. If you've ever taken a biology class, then you're probably heard of the mitochondria. This is the "cellular powerhouse" where energy production takes place and this is where the FFA's go to be burned for energy.

The fat cell however, is still right were is was before (in your thighs, lower abs, etc), waiting to be filled up with more fat if you're not careful (so keep using energy and burning more calories than you consume so your fat cells get empty and stay empty!)

Hope this helps!

Answer 2

No well, that DOES sound stupid, sorry....

Ever heard of "burning" fat?
The weight you lose is mostly water, which is eliminated through urination, and fat, which is burnt as a source of energy by the lipid oxidation chain in the mitochondia (on the mitochondria membrane walls, to be precise).
You don't "lose" weight, like you don't know where you left it. but the fat is used as fuel for your bodily functions...
One Kg of fat provides about 7000Kcal.
Once the fat reserves are over, and you still burn more than you eat, then the body starts attacking the protein reserves, first from the liver, then it goes using the muscle mass...
Somehow I am hoping you are joking...

Note to Madbaldscotsman:
There are NO aminoacids in fat!!!!!
Aminoacids are the units which makes the proteins (also called polypeptides) - I am really impressed by the general ignorance about this field......

Answer 3

OK, so your body uses energy to do anything. When you lose weight, your body is actually burning off weight. You're in some sense burning energy when you do something, this is when you burn off weight. That's why excercise programs say that you can "burn calories."

Answer 4

Waste products are released in your toilet and in the air through your breath and sweat. You metabolize it as well, consuming the amino acids that are in fat. After about 40 minutes of excercise at about 60% your max heart rate, that's when you start to burn fat instead of the glycogen in your liver and muscles.

Answer 5

Number 1
Number 2

Answer 6

Urine, feces and sweat. They use a breath analyser to determine how many calories people burn, so I expect you can even lose weight through exhalation.

Answer 7

Honestly thats a very interesting question. i don't know