Getting up in the morning to urinate less, urine color dark, may be a normal physiological phenomenon, may also be due to urinary system diseases. Getting up in the morning to urinate less, urine color dark may be a normal physiological phenomenon, is due to the night intake of water less, urine concentration, the body metabolites increase due to. For physiological color darkening, you can appropriately increase the amount of water intake, and then urinate when the color can gradually return to normal. Urinary system diseases may also cause the darkening of the color, less urine. For example, cystitis leads to edema of the bladder neck, causing narrowing of the urethral opening and reduced urination, which may also be accompanied by cloudy urine, painful urination, frequent urination and other uncomfortable symptoms. If you wake up in the morning to urinate less, dark urine, accompanied by other uncomfortable symptoms, you should promptly seek medical advice, follow the doctor’s instructions for further examination, with the help of the doctor for targeted treatment or therapy.