When the tissues in skeletal and smooth muscles contract together, they cause the lungs to exhale, the heart to squeeze blood from its chambers, and blood vessels to constrict. But they can t contract continually, they need to release and relax, and this requires magnesium. You can t relax without it. That s right, your body literally cannot relax without the mineral magnesium. That s because it s an essential element a process called nerve impulse contraction. Calcium plays the opposite role in the process, it s responsible for the contraction of these tissues. The process is contract and relax, contract and relax, over and over again. But if the ratio of calcium-to-magnesium becomes skewed too far toward calcium the consequences can become serious. Fortunately, Vitamin D3 may support a healthy alignment between the two minerals since it can help move excess calcium into bones. Each of these processes creates significant amounts of free radical toxins as by-products. Free radicals cau