Im just about two and a half weeks into eating healthier, and going to the gym for 1 hour per day. I ve noticed that my stool is very light and flaky, almost like sawdust. It passes easily, which is better than before because before I had more claylike stools . Ive been trying to get better at drinking sufficient water, however I know that most times Im dehydrated, but since I started my new regimine Ive tried to make a concious effort to drink water.. but the change in stool is concerning.