Each physical or health hazard is a âhazard classâ (e.g., Carcinogenicity is a hazard class). A âhazard classâ may be sub-divided in the criteria into. several âhazard categoriesâ based on the degree of. severity of the hazard.
Quick Answer. Calcium is a crucial part of muscle contraction. The ionic element is released from muscles during contraction and relaxation. The release of calcium helps propagate the muscle contraction and relaxation stages. Continue Reading.
Effects on Muscles. Calcium and magnesium play roles in muscle health. Magnesium helps muscles to release, while calcium helps them to contract. That is why it is so important to obtain a balance of the two minerals.