Was never much into coffee, so only drink not strong coffee with milk in the morning. During the day I drink pure water and black tea with strawberry of maybe

Was never much into coffee, so only drink not strong coffee with milk in the morning. During the day I drink pure water and black tea with strawberry of maybe fruits, something like that. In the evening I drink fat-free kefir (http://en.wikipedia.org/wiki/Kefir http://en.wikipedia.org/wiki/Kefir). About two months ago I started adding as less sugar as possible to coffee and tea and one month ago I drink tea and coffee without sugar at all. I have a feeling that digestive system started working much better after this change.