Can Exercise Suppress Reproductive Hormones in Men?

@article{Nash1987CanES,
  title={Can Exercise Suppress Reproductive Hormones in Men?},
  author={Henry Nash},
  journal={The Physician and sportsmedicine},
  year={1987},
  volume={15 1},
  pages={180-9}
}
Researchers examining the effects of exercise on hormones in men say that extremely strenuous activity over a long period of time, combined with anorectic behavior and a high-stress lifestyle, could lower testosterone levels.