Symptoms of Yang deficiency in men mainly include fear of cold, cold limbs, mental weakness, fatigue, easy fatigue, heavy body, lumbar weakness, reduced sexual function, impotence, premature ejaculation, clear and long urine, hearing loss, memory loss, drowsiness, as well as particularly easy sweating, prone to lumbago, joint pain, osteoporosis, cervical spondylosis. Also, they are prone to chest tightness, shortness of breath, diarrhea or lower limb edema. Some people may have testicular pain, some may have premature graying and hair loss, and some may have a greenish or dark complexion. In terms of tongue, it may appear as a light and fat tongue with white coating, and in terms of pulse, it may appear as a sunken and weak pulse or a sluggish pulse.