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Nervous tension immediately tightens every muscle and nerve in the body and restricts the normal action and free and rhythmic flow of the various circulations. It holds the poisons in the body preventing their free exudation and by their presence creates more poisons.
Medical Definition of Tension. Tension: 1) The pressure within a vessel, such as blood pressure: the pressure within the blood vessels. For example, elevated blood pressure is referred to as hypertension. 2) Stress, especially stress that is translated into clenched scalp muscles and bottled-up emotions or anxiety.