CFS is much more debilitating than you make it sound and it is not about "feeling bad". Some patients are effectively bedridden. The disease is very poorly und

CFS is much more debilitating than you make it sound and it is not about "feeling bad". Some patients are effectively bedridden. The disease is very poorly understood but one common symptom seems to be a low tolerance for excercise. CFS patients recover very poorly from exercise, and a day of even moderately increased physical ativity may cause them to "crash" and become debilitated for multiple days. It is also worth mentioning that CFS patients often have normal results for cholesterol, blood pressure and so on. One reason why biomarker studies like this one are important is exactly because currently CFS patients often end up bouncing from doctor to doctor, and none of the diagnosis ever work.