Cardiovascular fitness schedule 0

It has been proven conclusively that if you spend a few minutes every day exercising you will do your heart a whole lot of good. Even 20 minutes of exercise on at least 3-4 days in a week is more than enough to improve cardiovascular fitness, burn calories and tone up your body.
What are the various exercises one can do to improve the cardiac fitness?
1. Riding a stationary bike: Pedal with medium resistance and gradually increase the speed and resistance.
2. Walk on a treadmill: Take rapid and long strides and aim to attain a speed of 4.5 miles per hour. Ten minutes into the workout increase the incline.
3. Run on a treadmill: Begin with walking, after 3 minutes run for a minute and then again return to a slow run rhythm for 1 minutes followed by a one-minute run.