Fasting is an ancient practice, oftentimes associated with religions throughout the ages. But the concept of intermittent fasting is new and has recently exploded in popularity. When you're not fasting, you can eat the food you normally would. Of course, you shouldn't load up on lots of French fries and doughnuts. But studies seem to show that your health changes for the better when you fast, even if your diet does not. You should still add more fruits,...