With the advent of desk jobs, television, and contraptions like remote controls, lawn mowers, and many more, the 21st century included countless individuals with sedentary lifestyles. Studies show that in America alone, there are about six out of ten adults with inactive or under-active lifestyles. This is probably the reason why there is a growing number of overweight and obese individuals. These individuals might be prone to health risks like cardiovascular diseases, hypertension, certain cancers and diabetes, and coronary heart disease. It is shown that any significant weight loss may improve one's health and may prevent the occurrence of these ailments.

Exercise and nutritious diets are safe and effective ways to lose weight and improve overall health. In addition to weight-loss, exercise itself can bring beneficial effects on cholesterol levels even without accompanying weight-loss. This is according to a study conducted by Duke University Medical Center. In this study, the participants did the caloric equivalent of brisk walking or jogging for 12 to 20 miles a week, doing them either in moderation or vigorously. The study suggested that in terms of cholesterol levels, the amount of exercise and not the intensity of exercise made significant health benefits. A healthier heart can be achieved through exercising because this activity is vital to overall health of the blood vessels and the heart. With regular exercise, the heart will be able to pump sufficient blood and deliver additional oxygen with increased efficiency. Individuals who are not losing weight despite frequent exercise should not be discouraged because exercising itself can be beneficial. Even if people don't lose weight, physical activities may help them live longer.

Physical activity or exercise may not only improve one's physical well-being but also their mental state. Many medical studies point out that exercise, especially aerobic exercise (jogging, brisk walking, and jumping rope) as one of the best treatment for stress and anxiety. This is possible because of the production of endogenous morphines or endorphins. These are substances that is produced by the brain that might work as the body's natural pain-killers. It said that endorphins might be capable of elevating one's mood, self-esteem, and mental functioning. Partaking in moderate or vigorous physical activities may promote the production of endorphins.

Exercise should be done properly and in moderation to achieve health improvements. Individuals who want to improve their health don't have to train like marathoners or even join a gym. Strength training (push-ups, pull-ups, etc) coupled with 30 minutes of jogging or brisk walking can keep your body toned and improve metabolism. These regimens can be done with little or no equipment at all. Many health experts claim that the key to improved health is not intensity or using sophisticated equipments but continuous physical activity. Exercising properly can make people feel better, have more energy, and become less prone to stress. Before partaking in physical activities and making adjustments in food regimens, individuals are encouraged to seek the advise of health experts. They may prepare a workout routines that are recommended for individuals based on their specific health conditions and fitness goals.