it would be worth it to know if the non-Muslims observe the days of fasting during their respective faiths or even if they are aware if it exists, the results would surprise everyone. The thing is that with fasting being strictly enforced in this region u may be inclined to experiment with it or more so abide with it. Just my observation. I fast a bit too but as a form of penance not because its healthy or to develop a stronger character (that one develops with a lifetime....u may be aggressive and strong character but is it the right one for u and those around u? ), individual gains in any form are good but share a thought and prayer and importantly deed for those deprived of their basic needs we take for granted. peace with u all.