1. Orlando, C., Levitan, E. B., Mittleman, M. A., Steele, R. J., & Shrier, I. (2011). The effect of rest days on injury ratesScandinavian journal of medicine & science in sports21(6), e64-e71.

2. Lastella, M., Vincent, G. E., Duffield, R., Roach, G. D., Halson, S. L., Heales, L. J., & Sargent, C. (2018). Can sleep be used as an indicator of overreaching and overtraining in athletes?Frontiers in physiology9, 436.

3. Kreher, J. B., & Schwartz, J. B. (2012). Overtraining syndrome: a practical guideSports health4(2), 128-138.