1. After doing a 14 day fast long how should I wait to do another fast? I remember hearing 2 weeks but that doesn't seem right.
2. A girl that I talked to wonder if heartburn was a sign of detoxing. I know headaches and tendernes were normal but i wasnt sure about heartburn. She's thinking about getting off of the fast.
All fasting slows the metabolism and it can take 4 to 6 weeks for the metabolism to get back up to speed so it is prudent to wait 6 to 8 weeks between fasts to make sure that you don't mess your metabolism up. Of course this is on a case by case basis depending on the individuals metabolism and whether they exercise regularly which is the best way to bring the metabolism up to speed.
When a person is obese almost always they alredy have a slow metabolism so yoyoing the metabolism by doing the fast too close together without excersising regularly and changing their habits to healthier eating could cause problems and make it even more difficult to lose weight. The worse scenario is that if someone trying to loose weight doesn't change their eating habits after fasting and doesn't exercise they can gain the weight back very quickly and possibly put on more than they lost.
Don't really know much specifically about the heartburn thing but generally speaking approaching any uncomfortable symptoms on the MC as being a detoxing symptoms and pressing on and start drinking lots more fluids most uncomfortable symptoms will generally disappear in a day.