Denver's Altitude Hack: The Coffee Myth That's Crashing Your Workout

By Franklin Everett Shaw

March 12, 2026

Denver, the Mile High City. It’s a breathtaking place to live and train, but its altitude presents unique challenges, especially when it comes to athletic performance.

Many athletes, and even everyday residents, fall into the trap of thinking more coffee equals more energy, especially when battling the fatigue that can come with altitude. This is a dangerous misconception, particularly in Denver.

Let’s dismantle this myth and explore how to actually optimize your performance in Denver’s challenging environment.

Coffee, while a stimulant, is also a diuretic. At Denver’s altitude, the air is drier, leading to faster dehydration.

Adding coffee to the mix exacerbates this issue, potentially leading to decreased blood volume, reduced oxygen delivery to muscles, and ultimately, poorer performance. Think cramping, fatigue, and a general feeling of sluggishness during your Red Rocks hike or Wash Park run.

Furthermore, the anxiety and jitters that can accompany excessive caffeine intake are amplified at altitude. The lower oxygen levels can already trigger anxiety in some individuals, and caffeine only intensifies this effect.

So, what’s the solution? It’s not about eliminating coffee entirely (unless you’re particularly sensitive), but about understanding how to counteract its negative effects and implement strategies that truly enhance performance at altitude.

First, let’s talk hydration. Forget the generic “drink eight glasses of water a day” advice.

Denver requires a personalized approach. Your hydration needs depend on your activity level, body weight, and even the weather.

Here’s a simplified hydration calculator tailored for Denver’s altitude:

Calculate your baseline daily water intake: Body weight (in pounds) / 2 = ounces of water per day.
Add extra water for altitude: Add 20-30% to your baseline.
Add extra water for exercise: For every 30 minutes of exercise, add 8-12 ounces of water.
Consider electrolyte intake: Especially during and after exercise, replenish electrolytes lost through sweat.

For example, a 150-pound person would need a baseline of 75 ounces of water. At Denver’s altitude, they’d add another 15-22.5 ounces. If they run for an hour, they’d add another 16-24 ounces. That’s a significant amount of fluid!

Don’t just chug water, though. Sip consistently throughout the day.

Carry a water bottle with you and set reminders on your phone. Consider using a hydration tracking app to monitor your intake.

Next, let’s address altitude acclimatization. This is crucial for anyone new to Denver or for those pushing their limits in high-altitude activities.

Acclimatization is the process by which your body adapts to the lower oxygen levels. It takes time and patience.

Here’s a sample week-long acclimatization workout schedule for someone new to Denver or returning after a prolonged absence:

Day 1: Light walk (30 minutes) at a moderate pace. Focus on breathing deeply.
Day 2: Rest or very light activity (yoga, stretching).
Day 3: Short hike (1-2 miles) with minimal elevation gain.
Day 4: Rest or light activity.
Day 5: Moderate intensity workout (running, cycling) for 30-45 minutes at a comfortable pace.
Day 6: Rest or light activity.
Day 7: Longer hike (3-4 miles) with moderate elevation gain.

Listen to your body. If you experience symptoms of altitude sickness (headache, nausea, fatigue), descend to a lower altitude and rest.

Gradually increase the intensity and duration of your workouts as your body adapts. Don’t rush the process.

Another key factor is nutrition. Focus on iron-rich foods to support red blood cell production, which is essential for oxygen transport.

Good sources of iron include lean meats, beans, and leafy green vegetables. Consider supplementing with iron if you’re deficient, but consult with a doctor first.

Avoid processed foods and sugary drinks, which can contribute to inflammation and hinder recovery.

Prioritize complex carbohydrates for sustained energy.

Common mistakes developers face when trying to optimize performance at altitude include:

Ignoring hydration: Many athletes underestimate their fluid needs, especially in Denver’s dry climate.
Overdoing it too soon: Rushing into intense workouts before acclimatizing can lead to altitude sickness and injury.
Neglecting nutrition: Failing to fuel your body properly can impair performance and recovery.
Relying on caffeine as a crutch: Using coffee to mask fatigue can backfire and exacerbate dehydration.
Ignoring individual differences: Everyone responds differently to altitude. What works for one person may not work for another.

To overcome these challenges, track your hydration, acclimatize gradually, prioritize nutrition, and listen to your body.

Consider working with a coach or healthcare professional who specializes in altitude training. They can provide personalized guidance and help you optimize your performance.

Remember, optimizing performance at Denver’s altitude is a marathon, not a sprint. It requires a holistic approach that encompasses hydration, acclimatization, nutrition, and rest.

Ditch the extra coffee and embrace these science-backed strategies to unlock your full potential in the Mile High City. You’ll be amazed at the difference it makes.