If you have been somewhat out of shape lately, you must have been pondering about the possibility of taking to physical exercises.
After doing treadmill workout over a pretty long period of time, your body tends to get used to it. This is when something like the law of diminishing returns seems to come into effect. The body begins to burn fewer and fewer calories in spite of performing the same amount of exercise on the treadmill.
The concept of treadmill exercising for heart patients is very simple. Through treadmill walking, they are administered what is called the sports physiology training.