Final answer:
The cumulative biological wear and tear from stress responses maintaining body equilibrium is known as allostatic load. It refers to the negative health consequences of prolonged and excessive stress, which can lead to conditions such as hypertension and immune system impairment.
Step-by-step explanation:
The cumulative biological wear and tear that results from the body's responses to stress, which aim to maintain equilibrium, is known as allostatic load. This phenomenon arises when the physiological mechanisms that usually help us adjust to environmental challenges, such as Hans Selye's general adaptation syndrome with its phases of alarm, resistance, and exhaustion, become overtaxed due to chronic or excessive stress. If these stress responses are prolonged or frequently exceed normal ranges, they may lead to health issues like hypertension or weakened immune system functioning, illustrating the detrimental physical effects of sustained stress responses on our bodies.