Caffeine and acids in coffee can worsen symptoms for individuals with stomach conditions, cardiovascular issues, insomnia, or those taking medication.

Drinking coffee before exercise can increase alertness, reduce fatigue, and improve athletic performance, though effects vary among individuals.

Eating too much, consuming spicy or sweet foods, or drinking alcohol or coffee in the evening can lead to difficulty sleeping, frequent awakenings, and morning fatigue.

Drinking coffee, especially in the morning, can stimulate bowel movements, promoting digestive activity.

Coffee contains caffeine, antioxidants, and various bioactive compounds that can support liver health, especially when consumed unsweetened and in moderation.