As he began his internship in a hospital emergency room, George felt very anxious. Throughout the internship he experienced intense and prolonged stress, did not eat well, and did not get enough sleep. When he successfully completed his internship, he felt completely worn out and got very sick with the flu. George was probably experiencing the:

Exhaustion stage of the general adaption syndrome

Explanation:

Stress is simply defined as a negative emotional state which occurs due to one's perception that as an individual, your inability to cope with events or circumstances. They includes major life events, catastrophes and natural disasters.

General adaptation syndrome as explained by Hans Selye shows that there are three recognized stages with which the body uses to respond to stressors with are termedgeneral adaptation syndrome (GAS).

The first stage is the alarm stage, in this stage, burst of energy is given(provided). The second stage, known as the resistance stage is when the human body seeks to resist or adapt to the stressor and the last stage is known as the exhaustion stage due to the fact that energy is depleted.

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.