Duration
Harmless muscle twitches in the calf, which are based on a lack of fluids or minerals, stress or overexertion due to sports, are usually not long lasting and often disappear after a certain recovery phase, after stress reduction or after taking supplementary magnesium/calcium preparations. If the muscle twitches occur more frequently or persist for a longer period of time, a doctor should be consulted. If the muscle twitching is based on a more serious neurological disorder, it is quite possible that it is a chronic or even increasingly severe symptom of the disorder.