According to the General Adaptation Syndrome (GAS), John is currently in the third stage, which is exhaustion.
The General Adaptation Syndrome states that the body goes through three stages of alarm, resistance, and exhaustion when it is exposed to any kind of stress, whether positive or negative.
At the exhaustion stage, if John does not resolve the stressors, perhaps by confronting Jane in a polite manner, it can lead to the development of physical and mental health problems.
Thus, John is currently in the exhaustion stage of the General Adaptation Syndrome.
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