I'm experimenting water-fasting on myself since last 40 hours. The thought of not eating for so long is scary but this is adventurous. Ate home made mutton on Sunday & since then I'm drinking only water & sometimes green tea for taste. Our body switches from digestion mode to healing mode and uses stored fats to generate energy which is called Ketosis. Also, because of 'only water' intake, our skin & all other organs starts rejuvenating themselves. On first day, we feel so much hunger. On second day, you start feeling pain on all those parts which have become weak or ill from inside. On third day, comes the feeling of euphoria. No hunger, no food cravings, nothing. This process also detoxifies & resets our body back to it's natural state. I've also experienced the resetting of my biological clock, because today I woke up at 7am! This resetting means, for example, our pancreas goes back to its original level of releasing insulin. This will h...