Stress is an important aspect of human biology, as it allows us to react quickly and decisively in various difficult situations.

During periods of stress, the body secretes a special hormone, cortisol, which is synthesized from cholesterol. It provided energy to our distant ancestors who had to deal with wild animals and other threats. Therefore, it’s a useful tool from an evolutionary point of view.

Modern people get stressed due to other causes, like difficulties associated with work, but cortisol is produced in this case too. However, a person doesn’t need as much energy to solve these problems.

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