What Really Happens When You Drink Coffee Every Morning

caffeine can:

• Reduce deep sleep quality
• Make sleep less restorative

3. Anxiety and Jitters

Consuming too much caffeine — typically more than 400 mg per day (about four cups) — can lead to:

• Rapid heartbeat
• Nervousness
• Tremors
• Anxiety

People with anxiety disorders or those who metabolize caffeine slowly may be especially sensitive.

4. Digestive Effects

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