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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.
1. twitching-a sudden muscle spasm; especially one caused by a nervous condition. twitch, vellication. cramp, muscle spasm, spasm-a painful and involuntary muscular contraction.tic-a local and habitual twitching especially in the face.oun. 1. twitching-a sudden muscle spasm; especially one caused by a nervous condition. twitch, vellication. cramp, muscle spasm, spasm-a painful and involuntary muscular contraction. tic-a local and habitual twitching especially in the face. blepharism-condition in which a person blinks continuously.