Overview
- Reporting published Tuesday pulls together research and expert advice to start the day with water and delay the first coffee to avoid amplifying morning stress hormones.
- Cortisol naturally peaks around 8 to 9 a.m., and a Psychosomatic Medicine study found morning caffeine can push levels higher for up to six hours, which can bring nervousness and higher blood pressure.
- Sleep quality improves when people avoid caffeine within six hours of bedtime, according to research in the Journal of Clinical Sleep Medicine.
- Cutting back can trigger headaches and trouble focusing within 12 to 24 hours, and a sudden stop may cause constipation because coffee stimulates digestion and increases fluid loss.
- Practical swaps include skipping the snooze button, rehydrating, light stretching or yoga, and fresh air, while Cardiff University researchers report chewing gum can boost concentration as a stand‑in for coffee or energy drinks.