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What Is Cortisol?
Cortisol, or hydrocortisone, is the body's stress hormone. The adrenal glands, located on top of the kidneys, release cortisol to provide energy and increase alertness in response to stress.
For many years it has been generally accepted that waking up results in a stimulus to release hormone cortisol - a phenomenon called the “cortisol awakening response” (CAR). This response has ...