Magnesium is an element that acts as a regulator against diseases. Dr. Delbet demonstrated that magnesium's action on white blood cells doubles their effectiveness in destroying microbes. It regulates the functioning of the heart and blood vessels. One of the most common ailments is arthritis, which is caused by an improper ratio of calcium, causing bone deformities and ossification of cartilage and joints. Magnesium solubilizes excess calcium, providing proper muscle function and bone regeneration. Regarding the common issue of excess cholesterol, magnesium positively influences blood vessels by cleaning and flexibilizing them, significantly reducing the effects. Additionally, magnesium helps solve the problem of constipation by acting as a stimulant, increasing intestinal mucosa activity and balancing its production. One of the most prevalent problems in modern life is stress, and magnesium has a stabilizing effect on neuron excitability, which can attenuate or prevent anxiety manifestations that sometimes become real problems. **FUNCTIONS OF MAGNESIUM IN SPORT** Magnesium, as a fundamental natural element, plays an essential role in the prevention of traumatic and muscular injuries, also providing the necessary strength and energy for this type of activity. Common injuries such as sprains, fractures, or fissures are less likely to occur in athletes with a good intake of magnesium in their diets or baths. In cases of recovery and recuperation, magnesium facilitates faster and stronger healing and bone reconstruction thanks to its role in the calcium adherence to bones. Magnesium is distributed in our bodies both outside and inside cells. Extracellular magnesium is involved in nerve and muscle transmission, heart function, and plays a crucial role in muscle relaxation. Intracellular magnesium is part of the bone matrix. For athletes, magnesium is a vital mineral because it, in balance with calcium, plays an important role in muscle function, relaxation, excessive contraction (muscle cramps), irregular heartbeats, reduced blood pressure, weakness, etc. Effort leads to a loss of magnesium, and its deficiency reduces resistance and adaptation to effort. **SYMPTOMS OF MAGNESIUM DEFICIENCY** The absence or deficiency of magnesium is relatively common in our bodies and is reflected by various symptoms such as hypertension, gastrointestinal disturbances, muscle weakness, fatigue, depression, intellectual impairment, constipation, memory loss, etc. **USAGE TIPS IN BATHS** For injury recovery, it is recommended to fill the bathtub with hot water and add 2 kg of natural magnesium salts for the bath. In cases of severe muscle or bone injuries with strong pain, it is advised to add a higher amount of magnesium salts to the bath, as the higher the concentration, the greater and faster the effect. The affected areas should be massaged to facilitate skin pore dilation and allow magnesium ions to penetrate and be transported through the blood to where they are needed. In these cases, baths should be taken for 9 consecutive days (one bath per day) followed by 2 or 3 alternating baths during the week. There are no side effects caused by magnesium ions. However, due to its relaxing effect, baths may cause slight fatigue. If so, the bath should be interrupted for three days and then continued until the recommended baths are completed. For maintenance, prevention, or strengthening of the body, it is recommended to use 1 kg of magnesium salts in the bath once a week or every 15 days. It is not advisable to bathe again until the following day.