Also, they might find many of the exercise activities promoted to be unnatural to them. High-intensity exercises can require more skill and will that many people have, especially older people and sick people. The chances of injury are greater as well. High-intensity exercises can also cause cardiovascular disease problems. Unfortunately, exercise and fitness are now being marketed as products for those whose health is already in decline.
Preventive exercise is much more important.
One third of all deaths due to coronary heart disease, colon cancer and diabetes are caused by physical inactivity. In all, it can be said that about half of the people of Australia are inactive enough to significantly increase their chances of illness. Walking provides less exercise for the heart. The cyclists therefore achieved better health benefits from their exercise. Exercise and diet have over twice the benefit of diet change alone.