A leg jerk, often referred to as a muscle twitch or spasm, can be caused by various factors, including muscle fatigue, dehydration, or electrolyte imbalances. It may also occur as a reflex action in response to stimuli, such as a sudden noise or touch. In some cases, conditions like restless leg syndrome or neurological disorders can contribute to these involuntary movements. Stress and anxiety may also play a role in exacerbating leg jerks.
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