We get tired after exercise because our muscle fibers get tired very quickly. This is due to the major source of energy for the muscle tissue, called adenosine triphosphate, or ATP. As the muscles make use of this supply of energy, they get tired and fatigue.
Thee body parts that help resist against diseases are white blood cells, antibodies, and the thymus.
The third option. Long period of uninterrupted low or moderate intensity physical activity.
A newer form of psychosurgery—cingulotomy—is used in rare cases of OCD.
