The no sugar diet that I am going off of is the one that Tom Brady made himself, I can't do everything that he does because he has a personal chef and has access to things that I don't.  The water part I follow pretty close, I drink around 12 glasses of water a day, and will increase as the weeks go on, although I have to use the bathroom a lot more... I feel better than when I would drink things like soda or sports drinks.  You feel different energy wise and the way your body feels.  Hydration is very important and soda honestly won't help with that.  Milk is one thing that I didn't know was pretty high in sugar so watching out for that has been pretty tough to start. High fructose corn syrup is in several things ranging from drinks to condiments and it's one of the worst things you could put into your body because it is a sweetener that is way more process than most things.  I also have to take time to read labels and make sure that is has low or no sugar so it takes more time to get the things I need.  I like this diet because it helps to stay in good shape and it's also pretty interesting to me.