This OER textbook was written by Flynn, S., Jellum, L., Howard, J., Moser, A., Mathis, D., Collins, C., Henderson, S. & Watjen, C., and updated in 2018. It is a textbook for general Exercise Science/Physical Education classes with chapters covering the components of fitness. In December 2024, Angela Effertz changed the format by condensing and rewriting chapters, updating statistics and tables, as well as adding images. Some chapters of the original OER textbook were omitted in this version.
