Rest was once thought to be the most important factor in recovery from concussion, and post-concussion syndrome. However, a recent literature review looks at the role of activity, and how this can impact recovery. The authors discuss that 80-90% of all sport-related concussions resolve within a span of 1-2 weeks. Nevertheless, Post-Concussion Syndrome (PCS), persisting symptoms for an extended period of time following injury, can result in a clustering of symptoms due to a multi-physiological reaction. Thus advice to simply 'rest' may not be targeted enough for the management of the several symptoms resulting from PCS.