New book discusses how Intermittent fasting affects your body

When you eat breakfast, you're "breaking the fast." But what if you don't?

Intermittent fasting has got a lot of people talking. The concept is you only eat during an 8-hour window of the day, meaning you're not eating - or fasting - for the other 16. 

Intermittent fasting is a key part of Dr. Ian Smith's new book, "Clean and Lean." Dr. Ian stopped by FOX 2 to tell us more about how intermittent fasting can affect your body. 

"Remember your fat is energy storage and so if there's no food on board, your body says, 'I need energy,' - and will go into fat storage," he explained.  

The theory is that you'll lose weight and get rid of that belly fat. 

Dr. Ian's list of go-to clean foods includes the likely suspects like fruit, vegetables, healthy protein and even some dairy. 

"Dairy is full of Vitamin D, protein, calcium. Who started this business about no dairy?" he said.

But if dairy is allowed, it's no hard guess about what isn't - junk food, processed foods and chemicals we can't pronouce.

"All these artificial flavors, all these synthetic chemicals are hormone disruptors. So people think that they're eating okay - 'I'm eating low calorie but I'm now losing weight!' - it's because the processed ingredients are actually disrupting your hormones, causing you either to gain weight or to prevent you from losing weight. So in clean eating we get rid of that, and put intermittent fasting on top of that, and the results are great."

The book is called "Clean and Lean."
The Facebook group, if you just want to start there, is called Cleaner Get Leaner. The takeaway is stretch out the time your not eating, and when you do eat - choose wisely.