Intro - Exercise
The body is capable of exerting itself at a high level for many hours at a time (consider ultra-marathoners and Tour de France riders) and of exerting itself for short periods at extreme levels (consider sprinters and power lifters). This large demand on the body stimulates responses in all of its organ systems. In this case study, you can observe many of these physiological responses to exercise.
The subject is a healthy adult weighing 165 pounds.