6. Coffee on an Empty Stomach

Drinking coffee first thing in the morning stimulates stomach acid and cortisol production. Without food, this can cause acid reflux, anxiety, jitters, and digestive discomfort. Over time, it may weaken the stomach lining and increase stress hormone dependency.
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Coffee on an empty stomach can also lead to energy crashes later, as cortisol spikes are followed by drops. This habit may disrupt hormonal balance and sleep patterns. While coffee isn’t unhealthy, timing matters greatly.
Healthier alternative: Drink water first, eat breakfast, then coffee.