Global warming is controversial, of course, but the controversy is mainly over whether human activity is driving it.
Physical fitness is not only one of the most important keys to a healthy body, it is the basis of dynamic and creative intellectual activity.
Socialism proposes no adequate substitute for the motive of enlightened selfishness that today is at the basis of all human labor and effort, enterprise and new activity.
Human bodies are designed for regular physical activity. The sedentary nature of much of modern life probably plays a significant role in the epidemic incidence of depression today. Many studies show that depressed patients who stick to a regimen of aerobic exercise improve as much as those treated with medication.
During my eleven years as a New York City public school teacher, I saw firsthand the impact that poverty has on the classroom. In low-income neighborhoods like Sunset Park, where I taught, students as young as five years old enter school affected by the stresses often created by poverty: domestic violence, drug abuse, gang activity.