Drinking espresso moderately in the morning has the benefits of refreshing the brain and relieving fatigue, but if you drink too much or drink espresso on an empty stomach, you may experience digestive discomfort. 1. Benefits: Drinking espresso in the morning can make the brain excited, refresh the brain and reduce fatigue. Espresso will make the organism feel relaxed and happy. It also helps to promote gastrointestinal peristalsis and slightly improves the body’s metabolism. 2. The bad side: drinking too much espresso will affect your appetite and even cause stomach cramps. Patients with gastroesophageal reflux, gastric ulcers and other stomach disorders need to be cautious about drinking espresso. Drinking too much espresso in large quantities may have an effect on the nervous system, leading to severe insomnia, and may also affect the absorption of calcium. Drinking large amounts of espresso may stimulate the heart, resulting in symptoms such as panic and palpitations (rapid heartbeat, often accompanied by panic). Moderate consumption of espresso is advocated, and special populations such as pregnant women, children, insomniacs, and people with gastrointestinal disorders need to limit or avoid espresso.