风池（Fengchi /GB20), the "Wind Pool," is a crucial point located in the depression below the occipital bone at the nape of the neck. It is a specific and highly effective point for expelling Wind, treating exterior syndromes (like colds, headaches), and disorders of the head and sense organs (eye problems, nasal congestion, tinnitus). It is also a commonly used point for relieving neck stiffness and pain and improving brain function (dizziness, insomnia). While its applications are broad and significant, acupuncture at this point carries significant risk and MUST be performed by a qualified practitioner. Massage is a safe and effective method for daily self-care.