You are also allowed to drink as many calorie free beverages you like including water, unsweetened coffee and tea.
It involves eating 25 percent less food than your normal daily intake which may be hard for many people but then this is followed by a feast day where you can return to normal healthy eating.
The most common type of intermittent fasting is the daily timed restricted feeding.
Slimmers following this type of intermittent fast are only allowed to eat during a certain number of hours each day.
This is usually a 16-hour period of fasting, followed by an eight hour window of eating.
While you can pick the window you want to eat in, it typically starts at midday.
This is why this type of fast is so popular because you do not have to restrict your body of the food it wants drastically and you can still eat the foods you want within your calorie limit.
According to a recent survey by International Food Information Council Foundation, intermittent fasting proved to be one of the most popular diets to follow with many benefits including weight loss.
Between meals, as long as there is no snacking involved, insulin levels will drop and fat cells will release their stored sugar to be used as energy.
Weight loss occurs when insulin levels drop.
The idea of intermittent fasting is to allow your insulin levels to drop far enough and for long enough to allow fat burning.
Periodic fasting involves a period of fasting of more than 24 hours, it is also known as the 5:2 diet where dieters can eat normally for five days of the week and then restrict calories on the other two days.
Calories are often restricted to 500-600 calories per day.
According to a recent study, a group of dieters lost four to seven percent of their waist circumference while intermittent fasting as well as decreasing their overall body weight and BMI.