What are the physiological and metabolic aspects of the concept of physical exercise?

The best physical activities are the daily ones, such as walking, cycling, and household chores.
Physical exercise is a set of planned and specifically designed movements for good health or to treat a disease.
There are two fundamental types of exercise: aerobic and anaerobic.
The therapeutic efficacy of an exercise plan is achieved when it leads to a change in the patient's physical fitness.
Physical exercise is not an effective measure for weight loss.