In the face of fear, whether it be caused by a grizzly bear or an audience waiting to hear you speak, your body initiates a reaction to stress. The breath quickens, the pupils dilate, the heart begins to pound. These automatic responses occur as a part of the so-called fight-or-flight response, the body’s evolved mechanism to threats around us. Scientists have known for decades that this reaction is triggered by hormones released by the adrenal glands, two cone-shaped organs…
A protein released from bone is involved in triggering the body’s reaction to stress.
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