health effects of caffeine

Caffeine is a stimulant that temporarily increases alertness and reduces fatigue by activating your central nervous system. It can improve focus and physical performance, but excessive intake may lead to side effects like insomnia, increased heart rate, nervousness, or digestive issues. For most people, moderate caffeine consumption is safe and can boost mood and concentration. However, sensitivity varies—some may experience negative effects even with small amounts. It's important to consume caffeine in moderation and be mindful of how your body reacts, especially later in the day, to avoid disrupting sleep or causing unwanted health issues.