Americans are said to be the most obese people in the world now. Everyone should spend at least an hour 4-6 days a week walking and doing calisthenics. This will improve your cardiovascular system, muscular strength, flexibility, and body composition. It is also very important to eat the right foods. Never eat fried foods as they could be considered poisonous to your system. If you eat fat you get fat. "The research has proven that those who do not eat meat or dairy have lower rates of cardiovascular disease, hypertension, cancer, diabetes and obesity." From Dr. Joel Fuhrman's book "Eat to Live" page 92.