According to scientists from many disciplines, playing tennis for 3 hours per week can cut the risk of death in half. Tennis improves both physical and mental health more than other sports like golf or aerobics. It builds cardiovascular fitness while also promoting brain development. Tennis strengthens muscles and bones, improves coordination, and has mental benefits like developing a strong work ethic and ability to manage stress. The document concludes that tennis is the best overall activity for a lifetime of health and well-being.