Stretching and twisting muscles are signs of involuntary muscle contractions. These brutal and painful contractions often occur during a rest. Especially during the night or after a physical activity. These muscular contractions are caused by an imbalance of trace elements? vitamins and minerals in the body.<br /><br /><strong>Granions Muscle Relaxant 2 x 30 Phials</strong> allows a good muscular action during the night? during the pregnancy? by athletes? teenagers and old people. <br /><br />Potassium contributes to the neuro-muscular action in a significant way. <br />Group B vitamins? copper and magnesium are essential to the good muscular action. <br />Selenium is a natural anti-oxidative. If this one is not sufficient in the body? it can lead to a muscular weakness.