Doing exercise has more importance than just to lose weight; it also keeps your cardiovascular system healthy. The cardiovascular system consists of the veins, arteries, capillaries and the heart.
Exercise helps to improve your blood circulation because when you exercise the heart pumps the blood to the outer limbs for example the hands and feet. Exercise also helps to oxygenate your blood and so carry a good supply oxygen to your organs in your body.
It also helps strengthen your heart, because the heart is a muscle just like your triceps and biceps, although it never tires, and as you exercise the heart gets stronger. The fitter you are the less your heart has to work because your blood vessels will work better, as exercise will help the blood vessel linings to be more flexible.
The fitter you are the lower your blood pressure will be as a stronger heart can beat slower but still pump large volumes of blood around the body. On the other hand a weak heart needs to work harder to do the same work.
Your resting heart rate is also lower if you are fitter because the heart does not need to pump so often, it is found that athletes can have a very low resting heart rate.
One simple way to improve your cardiovascular system is by walking, although you do need to walk briskly because if you only walk slowly than there will be no benefit for you. Walking briskly just twenty minutes per day can help to achieve fitness and for an added benefit if you walk and tense your stomach muscles, it will help strengthen those muscles as well. It is quite a good idea to incorporate into your walk a hill or so, it does not have to be that steep to get the benefit, but it will get your heart pumping.
If you do not like the idea of walking than you could try some other form of exercise such as cycling, jump on a mini trampoline or swimming.
It does not really matter what you do as long as you do something, you need to get your heart pumping and the only way you can do that is to do some sort of exercise. Your body will be thankful that you have and your benefit will be that you have a stronger cardiovascular system.