Physical culture refers to activities that strengthen the body, enhance physiques and health, increase endurance, fight aging, and improve athleticism. The document discusses the history of physical culture from Eugene Sandow in the late 19th century to the Muscle Beach era of the 1930s-1950s, and how exercise can help combat the natural loss of muscle mass and increases in body fat that occur with aging. It also presents the results of a "Project Transformation" which showed improvements in weight loss, body fat percentage, and body composition for participants.