Warm black coffee can be consumed in moderation during the period of great aunt, not in excess. Women should pay more attention to rest during menstruation. If there is no necessary need, the intake of black coffee, especially cold black coffee, should be minimized. During the period of menstruation, women are weak and prone to discomforts such as menstrual cramps, insomnia and fatigue. The caffeine contained in black coffee may cause dizziness and rapid heartbeat, etc. Excessive consumption may aggravate the discomfort. During menstruation, you should maintain a regular diet and lifestyle, eat some fresh fruits and vegetables, millet porridge, milk, beans, lean meat and other foods. Pay attention to abdominal warmth and ensure enough sleep.