I find Fasting with Water, Lemon and Limes very refreshing.
A few years ago I weigh around 185IBS, and I started fasting and prayer, really helped now I'm down to 130IBS.
Dropping about four dress sizes this way was the most easiers thing ever.
http://www.tldm.org/Bayside/default.htm
http://www.tldm.org/News9/SyriaWorldWarIII.htm