Reishi mushroom, also known as Ganoderma lucidum, is a type of fungus that has been used in traditional medicine for centuries, particularly in Chinese medicine. It is often referred to as the "mushroom of immortality" due to its reputed health benefits. This mushroom is known for its potential to boost the immune system, reduce stress, and improve sleep quality. Reishi can be consumed in various forms, including powders, teas, and capsules, making it accessible for those looking to incorporate its benefits into their wellness routine.