Physical and mental health are inextricably linked. Research tells us that even a little bit of physical exercise in your daily routine can have an impact on your emotionall well-being and stress resilience. In this chapter we hear from military service members including Vietnam War POWs, who turned to increasingly strenous activity to boost their confidence, support their overall health, and cushion the impact of extremely stressful situations. As you will learn from the experiences of a young physician facing physical illness, exercise can also boost the process of recovery. You will learn to make a habit of exercise and gradually push yourself to accomplish bigger goals. Finally, you will see that physical exercise can also teach us important lessons about humility and perseverance.