This document discusses the importance of exercise and sports for health. It focuses on the subject's younger sister, Valentine, who at age 14 engages in many sports like running, horseback riding, swimming, and cycling on a regular basis. The sister believes exercise improves vitality and work capacity while making one feel refreshed. The subject also enjoys sports like swimming with the sister and finds them a positive way to improve posture and mood through contact with animals. Sports are becoming more popular worldwide as a means of improving physical health and condition as well as entertainment.