Mercola.com in the last day or so has a very fine and informative article on the benefits of FASTING!!
Yes indeed fasting at times does give health to your mind/brain and body!
He also goes into exercise while fasting, and gives a balanced approach.
For the Christian fasting should be a part of our lives. So for the mind and the body fasting is now proven by modern science to be a health pill shall we say.
The Christian should take time to fast now and again, missing one meal or more, and zero in on Bible study, prayer, and meditation.