Aerobic exercise has been found to be the most beneficial type of exercise. Exercise promotes growth of coronary arteries which helps blood flow to the heart more easily. It raises levels of HDL, the good cholesterol, in the blood stream, and it lowers blood pressure. Exercise can also help diabetics by removing glucose from the blood, so those that are on insulin need less insulin when they exercise. Exercise relieves stress by reducing muscular tension, and it may reduce levels of adrenaline caused by stress.
Exercise is an effective way to lose weight, and to maintain a healthy weight.
The big picture. Both exercise and a low fat diet play a key role in weight loss, as well as in maintaining a healthy lifestyle. Different levels of each are effective for different individuals, because each individual has their own genetic predisposition, and environmental factors to contend with. Some may need more exercise and less fat, and others may be able to get by with less exercise and the same amount of fat. However, exercise and healthy eating benefit everyone, even those who do not need to lose weight.