Not sure but my daughter is in a fast now, see what she says when its over.Intermittent Fasting... Does It Work?
The big three areas of healthy living are diet, exercise, and sleep. One, currently popular dietary technique that integrates all 3 of these areaslifeandhealth.org
Yes, of course it works. But what cannot be stressed enough, it is not all about losing weight. Far from it.
The key benefit of I.F. is not weight loss, it is better overall health, longer lifespans, and one of the most effective ways to prevent disease. This is an excellent write up about I.F., and here is one key takeaway from the article:
David Sinclair, PhD who is a longevity researcher and expert at Harvard, and author of the book Lifespan states that there are 4 major things that impact longevity: 1) calorie restriction is the most robust, 2) then food quality, 3) then exercise, and finally 4) cold exposure.
Caloric restriction is the most effective of the 4 things that have the greatest impact on ones ability to live longer. What you eat is very important, and of course exercise, but many people don't know about how cold exposure, a low level stressor, can affect your health. It also burns the "unhealthy" fat, the white fat, while activating brown adipose tissue, the "healthy" fat.
I would recommend reading about Wim Hof and his cold exposure methods, and the benefits of this, for more information.