Don't drink coffee on an empty stomach.

Discomfort in the stomach. Drinking coffee on an empty stomach is a serious test for a barely awakened organism. Taking the first hit, the stomach, as it should, releases hydrochloric acid, which is necessary for the processing of liquid Reduces cortisol levels. Drinking coffee on an empty stomach can disrupt your circadian rhythm. Simply put, your body releases cortisol in the morning, which helps you feel alert and active. Removes important minerals. Promotes excretion of calcium, potassium and magnesium from the body Increases anxiety. Yes, people experience anxiety when they drink coffee on an empty stomach. The reason for this is simple: caffeine stimulates the fight-or-flight response. It will give you palpitations, sweating and anxiety.