An interesting quote from Webmd:
Once the glycogen is gone, the body does turn to fat as a fuel source. But in reality, fat is an inferior energy source compared to glycogen. It's like trying to run a car on lighter fluid, says John Acquaviva, PhD, assistant professor of physical education at Roanoke College in Salem, Va. "In ketosis, the body does burn a higher percentage of fat, but overall, less calories are burned," he tells WebMD.
Full article:
http://my.webmd.com/content/article/...tselectedguid={5FE84E90-BC77-4056-A91C-9531713CA348}
Couple of things I've noticed being on atkins and atkins type diets:
My muscles shrunk.
My energy was low.
I dreamed about friggin' shredded wheat and brown rice (no shit.)
I became stupid. And my "brain fog" didn't clear after two weeks as some people like to claim it will.
My digestive system was hurting due to the lack of fiber (even though I was eating a ton of vegetables, truth is without carbs it was hard to get enough fiber).
It was difficult to stay well hydrated even though I was pounding the water.
Now, of course you can exercise when on a low carbohydrate diet (I've certainly done it.) But is being on a low carb diet necessary? Is it optimal? Is it healthy? Is it worth it in the long run?
From my experiences, I feel the answer to all these questions is no.
The best and healthiest way to lose fat is to burn it through exercise.
There are two groups that I'm aware of that should be on a Ketogenic Diet: epileptics (it helps them keep their illness under control) and those who are insulin insensitive (most people are not despite what you might have read).
It's great that you can lose weight on Atkins. But, in my opinion, one needs to adopt a well rounded diet and get in the habit of exercising to be successful long term. So why not skip the Atkins and do this first. Slow and steady wins the race against fat.
By well rounded diet I mean:
Lean meats, Fish
Whole grains (like brown rice, old fashioned oatmeal, barley, etc.)
Healthy Fats (found in nuts and seeds, avocado, salmon, etc.)
Lots and Lots of Vegetables (variety is key)
Lots of fruit (better in the morning time)