Ketosis may be the a way of burning fat but if you look at your medical dictionary then it states that it is a condition in which ketones are in the body in excessive amounts. This = to many keytones in the blood. This is not normal or healthy in a normal human who does not suffer from a hormonal defficiancy.
When you train and do all your excersises then that is the time when your ketone level will rise an the body will excrete these or reabsorb them, depending on how it is feeling that day.
If you are not training and the body is producing these keytones all the time without the stimulation of excersise then the excretary organs ie the bowels , liver and kidneys will find it difficult to maintian a healthy balance within the systems.
Dylan