We profile Garth McLean and his unconventional battle with Multiple Sclerosis. Garth is a practitioner and a teacher of Iyengar Yoga. Through the results of his practice, Garth has enlightened members of the medical community who attest to his able management of the disease. The title "Courage and Caution" refers to the advice Yogacharya BKS Iyengar offered Garth upon learning of the challenges he faces with MS.