The Science Behind Weight Loss: What Really Happens When You Shed Pounds
Look, I understand. You must have read a thousand weight
loss stories each one promising the secret or the one odd gimmick that would
change everything. Weight reduction is not magic, though. Science is simply
what it is. The whole process becomes much more understandable after you learn
what is really going on in your body.
It finally boils down
to energy:
Your body runs on fuel and is fundamentally a very complex
engine. That energy comes from calories. Eating is fueling the tank. You burn
that fuel when you shift about, think, breathe, or even sleep.
The mathematics is rather simple. Your body stores the
surplus as fat if you add more fuel than you consume. Your body draws from fat
reserves to cover the gap if you burn more than you put in. In a nutshell, that
is weight loss.
But why is fat so
tenacious?
This is where things become fascinating. Your body genuinely
enjoys fat storage. From an evolutionary perspective, fat was insurance. Bodies
adept at conserving energy were able to survive since our ancestors were unsure
of their next food source. Still, your body believes you may need that backup
energy sometime.
Your body doesn't automatically feel great when you start to
eat less, let's burn some fat! It believes uh oh, starvation time and in fact
tries to slow things down. Your metabolism might go down a little bit. You
might feel more drowsy. Concern for you causes your body to strive to save
energy.
What genuinely
happens to fat when you lose it?
When first I learned this, it dumbfounded me. You're not
pooping it out or sweating it off as you reduce weight. You are really
breathing it out.
Fat is split into carbon dioxide and water. When you breath
out, the carbon dioxide exits your body. Urine, perspiration, and yes,
breathing too are among your typical paths for water's exit. Most of ten pounds
lost goes via your lungs, therefore. Wild, wouldn't you say?
Hormones Are Acting
Center Stage:
Your hormones serve as the managers of your body's weight
reduction efforts. Insulin lets your body decide whether to store or burn fat.
Leptin lets your brain know when you have eaten enough. You are hungry ghrelin
tells you. Your stress hormone, cortisol, can actually cause you to retain
tummy fat.
This explains why sleep is really important. Your appetite
hormones go haywire when you don't get enough sleep. You have less leptin, the
hormone indicating hunger, and more ghrelin. Particularly carbs and sugar, you
finally want to consume everything nearby.
Muscle is more
important than you might imagine:
Even when you are just lounging about, muscle tissue burns
more calories than fat tissue does. This is why muscle is said to burn fat.
More muscles mean your body uses more energy just to live.
Losing muscle is something you want to avoid when you lose
weight. If you simply lower calories without working out, your body can also
break down muscular tissue along with fat. This is why strength exercise is so
crucial if you want to lose weight. You are instructing your body hey, I need
this muscle, so leave it alone and burn the fat instead.
The Confusion of
Water Weight:
Many people lose a lot of weight in the first week of a new
diet. They get excited. Week two follows, and the scale almost does not budge.
what happened?
That initial week was essentially water weight. Your body
keeps carbohydrates as glycogen, which also retains water. You burn through
your glycogen as you cut carbs or calories, and the water follows it. Not yet
fat loss. Actual fat loss happens more slowly and steadily.
Reasons Crash Diets
Fall Apart:
Your body knows. Too wise, occasionally. Your body enters
severe conservation mode when you significantly reduce calories. Your
metabolism declines. You lose muscle with fat. You are feeling really bad.
Here is the catch: your appetite comes roaring back yet your
metabolism is slower when you start eating normally again. You regain the
weight back sometimes more than you lost. Your body is just working to defend
itself against what it deems is starving.
The Actual Secret,
which isn't particularly a secret:
Sustainable weight loss results from establishing a mild
calorie deficit that your body won't panic over. You ingest enough protein to
shield your muscle. You frequently exercise your body. You sleep enough to keep
your hormones in check. You control stress so cortisol won't harm you.
Not hot. It moves slowly. It succeeds since you're not
fighting against your body but rather cooperating with its natural systems.
The Bottom Line:
Your body is not your adversary. It is not intentionally
becoming difficult or obstinate. It is following millions of years of
programming intended to keep you alive. Weight loss is about knowing that
programming and working within it.
Science informs us that steady and slow victories. Extreme
methods fall back. That your body composition takes precedence over the figure
on the scale. That hormones, stress, and sleep are every bit as important as
nutrition and exercise.
Once you have the science, you can stop falling for scams
and begin to choose actions that truly fit your body's performance. And that is
when true, permanent transformation occurs.
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