Chronic fatigue syndrome reflects loss of adaptability.

@article{Houdenhove2010ChronicFS,
  title={Chronic fatigue syndrome reflects loss of adaptability.},
  author={Boudewijn van Houdenhove and Patrick Luyten},
  journal={Journal of internal medicine},
  year={2010},
  volume={268 3},
  pages={249-51}
}