Final answer:
Walter Cannon observed that stressors trigger lowered blood sugar levels as part of the fight-or-flight reaction.
Step-by-step explanation:
Walter Cannon observed that a variety of stressors trigger lowered blood sugar levels, which is known as a fight-or-flight reaction. When the body encounters a stressor, such as an intense physical or emotional event, it releases stress hormones like adrenaline and cortisol. These hormones activate the sympathetic nervous system, preparing the body for action. One of the effects of this response is a temporary decrease in insulin and an increase in blood sugar levels to provide energy for the body to respond to the stressor.
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