Month: May 2022

Stress effects on the body

Stress affects the body

Stress affects the body Stress affects all systems of the body including the musculoskeletal, respiratory, cardiovascular, endocrine, gastrointestinal, nervous, and reproductive systems. Musculoskeletal system When the body is stressed, muscles tense up. Muscle tension is almost a reflex reaction to stress—the body’s way of guarding against injury and pain. With the sudden onset of stress, …

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Increase brain size

Why can’t we feel more?

Evolution of humanity This clock representation shows some of Earth’s major geological time units and definitive events. The Hadean eon represents the time before the fossil record of life on Earth; its upper boundary is now regarded as 4.0 Ga (billion years ago). Other subdivisions reflect the evolution of life; the Archean and Proterozoic are …

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Focus and Fuel

Focus and Fuel

Fight or Flight The overarching principle of the fight-or-flight response is marshalling resources for immediate needs instead of building for the future, act now and ask questions later. The hormonal rush of epinephrine focuses on the body, increasing heart rate and blood pressure and dilating the lungs’ bronchial tubes to carry more oxygen to the …

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