Hans selye discovered that if bodily "wear and tear" from a stress producing event continued, the effects became evident in three progressive stages called the general adaptation syndrome. the stages occurred in which order:

The order is:alarm, resistance, exhaustion

Hans Selye depicted three unsurprising stages the body uses to react to stressors, called general adaptation syndrome (GAS).

The first stage is the alarm stage (which gives a burst of vitality) 

The second stage is the resistance stage (the body endeavors to oppose or adjust to the stressor). 

The third stage is exhaustion stage (because that vitality or energy is drained.)