Skip to content

What to drink first, water or coffee? The Definitive Guide

4 min read

Many people wake up already mildly dehydrated after 8 hours of sleep, making the first drink of the day a crucial decision. Understanding if you should drink water or coffee first can significantly impact your energy levels and digestive comfort.

Quick Summary

Determine the optimal sequence for your morning beverages to improve hydration, cleanse your palate, and support gut health without an acidic hit to your stomach.

Key Points

  • Start Hydrated: Drinking water first replenishes your body after a night of sleep and boosts your metabolism.

  • Protect Your Stomach: Water acts as a buffer against coffee's acidity, helping to prevent heartburn and indigestion.

  • Enhance Flavor: Cleansing your palate with water allows you to better taste the nuanced flavors of your coffee.

  • Prevent the Crash: Staying hydrated helps smooth out the energy curve from caffeine, avoiding the sudden post-coffee slump.

  • Consider the 'Cortisol Window': Waiting at least 90 minutes after waking before drinking coffee can result in a more balanced and sustained energy boost.

  • Maintain Oral Health: A glass of water before and after coffee can help protect your teeth from staining caused by tannins.

In This Article

The Case for Water First: A Health-Conscious Morning

After a night of sleep, your body is naturally dehydrated, even if only slightly. Reaching for a glass of water first is the most widely recommended approach by nutritionists and health experts for several compelling reasons. It kickstarts your body's rehydration process, which is fundamental for all bodily functions and can boost metabolism. Beyond simple hydration, water on an empty stomach helps to wake up the body's systems gently.

Water serves as a protective agent for your stomach lining. Coffee is acidic and, when consumed on an empty stomach, can increase hydrochloric acid production, potentially leading to heartburn, indigestion, or aggravating conditions like acid reflux. By drinking water first, you dilute the stomach's acid content, providing a buffer that minimizes potential discomfort from your coffee. For those with sensitive stomachs, this is a simple, yet highly effective, preventive measure.

For coffee aficionados, water acts as the perfect palate cleanser. A sip of water before your first taste of coffee resets your taste buds, allowing you to fully appreciate the complex and subtle flavor notes of your brew. This is especially true for high-quality single-origin coffees or espressos. A clean palate ensures you taste the coffee, not the remnants of last night's meal.

Water can also help mitigate the infamous 'caffeine crash.' When you drink coffee, the caffeine binds to adenosine receptors in your brain, blocking feelings of tiredness. However, a sudden, high dose of caffeine can lead to a rapid energy spike followed by a slump. Proper hydration with water helps regulate this process, leading to a smoother, more sustained energy lift throughout the morning.

The Appeal of Coffee First: The Traditional Ritual

For many, the routine of having a coffee first thing in the morning is a deeply ingrained and comforting habit. The aroma and taste are potent psychological triggers that signal the start of the day and promise heightened focus and energy. The immediate caffeine hit is what many people seek to jolt themselves awake and feel alert. This instant boost is a powerful motivator for starting the day, especially for those who feel groggy and unmotivated.

Proponents of coffee first often argue that the mild diuretic effect is insignificant when consumed in moderation, and the water content of the coffee itself contributes to overall fluid intake. For individuals with a high caffeine tolerance or no digestive sensitivities, drinking coffee on an empty stomach might not cause any noticeable negative side effects. The perceived benefits of immediate mental clarity and energy outweigh concerns over dehydration or acidity for these individuals.

Wait 90 Minutes After Waking

For those who crave both the hydration of water and the full, unadulterated effect of caffeine, a strategic approach is to wait at least 90 minutes after waking before having your coffee. This timing allows your body's natural cortisol levels, which peak in the morning, to rise and fall naturally. Introducing caffeine during this peak can amplify the stress response. By delaying your coffee, you give your body a gentle wake-up call with water first, and then introduce caffeine when your natural energy begins to wane, maximizing its effectiveness without unnecessary jitters or crashes.

Water vs. Coffee: A Side-by-Side Comparison

Aspect Water First Coffee First
Hydration Replenishes fluids lost overnight effectively. Can worsen mild dehydration due to caffeine's diuretic effect.
Digestion Buffers stomach acid, reducing heartburn and irritation. Can irritate the stomach lining and cause digestive discomfort.
Energy Provides a gentle, natural metabolism boost. Offers an immediate, but sometimes jarring and short-lived, energy spike.
Caffeine Crash Helps prevent the crash by ensuring stable hydration. Can lead to an afternoon slump as the caffeine wears off.
Flavor Perception Cleanses the palate for a truer coffee taste. Flavors may be dulled by previous tastes in the mouth.
Dental Health Rinses away residue that can stain teeth. Can stain teeth more easily, especially when enamel is sensitive.

Finding the Right Balance

The most balanced and health-conscious approach is to start your day with a glass of water before enjoying your coffee. This strategy addresses the body's primary need for rehydration while preparing your system for the acidic and stimulating effects of caffeine. If you enjoy espresso, make it a point to adopt the Italian tradition of drinking a small glass of water before you sip, cleansing your palate for the purest flavor.

For most people, a glass of water is a small habit that yields significant health rewards. It can lead to fewer digestive issues, more stable energy levels, and a better appreciation for your morning brew. The choice is ultimately personal, but aligning your coffee habit with your body's natural state of waking-up dehydration is a smart move for long-term wellness.

As explained by Healthline, while moderate coffee intake likely doesn't cause significant dehydration in regular drinkers, prioritizing hydration with water is still the best practice.

How to Create a Better Morning Ritual

To get the best of both worlds, consider this easy-to-adopt routine:

  1. Wake Up: Keep a glass of water by your bedside and drink it immediately upon waking to rehydrate your body. Warm water with lemon can be particularly effective for digestion.
  2. Wait: Give your body at least 30 minutes, or ideally 90 minutes, to rehydrate and let your natural cortisol levels do their job.
  3. Enjoy: Brew your coffee and enjoy it with or after a meal. Savoring it alongside breakfast can also help offset its acidity.
  4. Rinse and Repeat: Drink another glass of water after your coffee to rinse your mouth and continue your hydration for the day.

Conclusion

While the allure of coffee first thing in the morning is strong, drinking water first offers a cascade of health benefits that better support your body's natural state. From improved digestion and stabilized energy to protecting tooth enamel and enhancing flavor, starting with water is the smarter choice. By rehydrating first and then enjoying your coffee mindfully, you can have the best of both worlds: a gentle wake-up followed by a clean, sustained energy boost.

Frequently Asked Questions

Drinking water before coffee is important because you wake up dehydrated. Water helps replenish lost fluids, protects your stomach from coffee's acidity, and cleanses your palate for better taste.

Coffee has a mild diuretic effect due to caffeine, meaning it increases urination. However, in moderate amounts, its water content typically offsets this effect for most people. The key is ensuring overall hydration with regular water intake.

Yes, drinking water alongside your coffee is a good habit. It helps with hydration and can cleanse your palate. It is particularly common to see espresso served with a small glass of water.

Many experts suggest waiting at least 90 minutes after waking. This allows your natural cortisol levels to regulate before introducing caffeine, which can lead to a more stable energy lift.

Delaying your morning coffee allows your body to rehydrate naturally with water first. It also prevents the introduction of an acidic substance to an empty stomach and can lead to more stable energy throughout the day.

For some, drinking coffee on an empty stomach can cause an upset stomach, increased acid production, or other digestive issues. It is often recommended to have it with or after a balanced breakfast.

This is a matter of personal preference. Some coffee connoisseurs prefer still water as a neutral palate cleanser, while others enjoy sparkling water for a more refreshing effect. Still water is generally less intrusive on the coffee's flavor.

Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.