Cross Training: References

Cross Training for Fun and Fitness. The American Council on Exercise.

http://www.acefitness.org/acefit/fitness-fact-article/2547/cross-training-for-fun-and-fitness/. Accessed June 2014.

Kisner C, Colby L. Therapeutic Exercise: Foundations and Techniques. 6th ed.Philadelphia: F. A. Davis Company; 2012.