Don't listen to anyone who speaks without giving a reasoning.
Until now, the graded exercise has been offered as a treatment on the basis of the "findings" of the study PACE that made the government of the UK with funding from the department of pensions. Last year, after losing a judgment, the authors were forced to disclose the data of the study that had been paid by all the citizens. It turns out that they used fraudulent methods, are inflated the supposed figures of "recovery", and used criteria that were not consistent with those that are diagnosed with the CFS/me.
Come on, a scam in every rule.
On the basis of the review of the data to the CDC of the USA have withdrawn their recommendation of the use of the graded exercise. And in fact, the IOM (Institute of Medicine) have been asked to rename the disease as a Syndrome of Exercise Intolerance, being one of the main symptoms of the malaise post-exertion (after any effort, from reading to walking) that involves the increase of the severity of the symptoms that are presented immediately or up to 48 hours after the effort.
Many times the consequences of the exercise or forced back to the activity are crisis and increased the severity of the condition that can be irreversible (no return to the previous state of health after doing this exercise).
To know more on this I recommend you to read:
https://sindromedefatigacronicapuntodeencuentro.wordpress.com/2017/03/01/203/
http://sfcaccion.blogspot.com.es/2016/09/pace-trial-o-como-estigmatizar-millones_3.html
http://www.virology.ws/2015/10/21/trial-by-error-i/
http://journals.sagepub.com/toc/hpqa/22/9
To have the best information on the exercise in the CFS/me available:
http://www.workwellfoundation.org/