Yes, fasting from all foods--just pure water is allowed--has many physical health benefits, even more then most of us realize. I have fasted many times and as a result, even though I am well along in age, I have an extremely healthy and youthful body and mind. That is great, but for me there was one down-side: I acquired a secret pride which kept me from becoming intimate with God. I didn't realize until recently of my sin. I will, in a few day, do something about it.
In Bible times, physical health benefits was not the reason for fasting. The main, if not the only, reason was to petition God for His attention.
Starting in early January 2008, I will be going on prolonged fast; hopefully 40 days. To see the real-time day by day results, click onto
www.exposing-pseudo-christianity.org.