I actually had to have sugar this week because I woke up very ill and I could feel the difference that my body had without sugar versus with it.  I didn't have much but just enough to get my energy back up. I still drink a lot of water and I got up to 13 glasses this week.  I think that water is the difference maker in the way I feel than when I did with sugar.  When just drinking water my body feels feels good and hydrated as with sports drinks or soda, I didn't feel as good. I plan to keep working my up but also to keep this going after the class ends because of the way I feel.  I think everyone should try it or at least lower sugar intake because it can impose a different level of energy and health on your body.