[enoren]

I will say that I used to drink coke/sodas regularly and was consuming too much sugar and was in the same boat as you that water was not satisfying enough unless I just got done exercising. As other posters have said, this is your body adapting to your diet, but not in a good way. You can train your body to crave the good stuff and mostly intollerate the bad, but it is through slow, daily changes. Don't expect to just stop drinking soda and drinking water as you will start craving it and going back to it. Instead you need to slowly swap good for bad and over time you will naturally desire good choices which will help you avoid any damage you are doing while you are young which you will certainly pay for in the future.

I think most of us were invincible at one time, but we come to realize it is an illusion as we get older and your older self has to pay for it. Also, keep in mind that you really are what you eat, or from a programmer point of view, your results are only as good as your data(i.e. "Junk in, junk out"). Cokes and McChickens are just chemicals and preservatives.