Why is rock salt used? Because it includes 84 minerals as opposed to the 92 minerals required to revitalize the human body found in crystal rock salt. The following are the advantages of salt cave sessions: Help to relieve bone pain and even repair some of it, such as lumbar discomfort caused by prolonged sitting. 2—Neck vertebral pain caused by holding a phone or reading in an inappropriate position. 3: Bone ache brought on by an air conditioner or a fan It aids in the stimulation of blood circulation and the cleaning of the lymph gland, which controls the buildup of toxins in the body. Inhaling iodine inside the cave boosts the respiratory system's immunity. As a result, it aids in the enhancement of one's mental state and mood.