During physical activity there are temporary changes in body function, for example, the heartbeat increases during physical effort gradually until it reaches the maximum rate and then returns to its condition before physical effort after a period of cessation.

With the continuous and orderly repetition of mathematical training and long periods of time, which extend to weeks and months, a series of constant physiological changes occur over the functions of the body's organs and the construction and structure of the body in general. In order for this adaptation to occur, the trainee needs long periods of responses resulting from the continuation of sports training for a long period of time, taking into account the importance of changing the intensity and quality of sports programmes from time to time so that adaptation does not occur in a particular type of sports training, and so it is important to change the quality and intensity of sports activities so that we can have more physiological responses and thus better results.
For example:
- The resting heart rate is reduced and oxygen consumption is increased as a result of the physiological effect on the size of the heart muscle.
- Increased muscle mass and muscle strength after a period of time after exercise of muscle force training (weight training)
- Body grease is reduced after regular aerobic activities.