How Caffeine Reduces Exercise Soreness—But Not for Regular Coffee Drinkers

If you’ve ever hit the gym hard and woke up the next day barely able to walk, you’ve felt delayed onset muscle soreness—or DOMS. It’s the deep ache in your muscles after unfamiliar or intense exercise. Many people try ice baths, stretching, or painkillers. But could something as simple as coffee help?

The short answer: yes—if you don’t drink coffee often. A study found that just 2 cups’ worth of caffeine reduced muscle soreness by 48% in women who rarely drank coffee or worked out.

What the Study Found

Researchers at the University of Georgia tested 9 female college students who were both infrequent coffee drinkers and irregular exercisers. After inducing muscle soreness through one to two days of physical training, the researchers gave some participants a caffeinated drink containing the equivalent of roughly 2 cups of coffee, while others received a placebo drink. When these subjects later performed leg exercises, those who had consumed caffeine reported 48% less muscle pain. They also experienced 26% less pain during subsequent activity.

Why Caffeine Helps with Sore Muscles

Caffeine is believed to affect the way your nervous system perceives pain. By blocking adenosine receptors, it can reduce the brain’s interpretation of discomfort, making sore muscles feel less painful. This mechanism is particularly effective in individuals not habituated to regular caffeine intake, whose bodies respond more strongly to its effects.

Why Regular Coffee Drinkers See Little Benefit

The study explicitly notes that the pain-reducing effect of caffeine is much weaker—or even absent—in people who drink coffee frequently. Habitual consumers develop a tolerance, meaning their nervous system adapts to regular caffeine intake, reducing its ability to block pain signals during exercise recovery. As a result, the findings do not apply to regular coffee drinkers.

Key Takeaways for Non-Regular Coffee Drinkers

• About 2 cups of coffee’s worth of caffeine (roughly 200mg) can reduce post-exercise muscle soreness by 48%
• The same dose reduces pain during later movement by 26%
• These effects apply primarily to those who do not regularly consume caffeine
• Frequent coffee drinkers are unlikely to experience the same level of relief

Frequently Asked Questions

How much caffeine is in 2 cups of coffee?

A standard 8-ounce (240ml) cup of coffee contains roughly 95–100mg of caffeine, so 2 cups typically provide about 190–200mg. That’s the approximate amount used in the study to achieve a 48% reduction in muscle soreness.

Does caffeine work for all kinds of muscle soreness?

The study focused on delayed onset muscle soreness (DOMS), the kind you feel 24–72 hours after unfamiliar or strenuous exercise. It did not test acute muscle pain or injuries, so the effects may not apply to all types of soreness.

Can I just take a caffeine pill instead of drinking coffee?

The study used a caffeinated drink equivalent to about 2 cups of coffee. While caffeine pills could deliver a similar dose, the research did not test pill forms specifically—stick to the equivalent amount if trying this method.

Why don’t regular coffee drinkers get the same pain relief?

Habitual coffee drinkers develop a tolerance to caffeine, meaning their bodies adapt and require higher amounts to achieve the same effects. Their nervous system is less responsive to caffeine’s pain-blocking mechanisms, reducing its effectiveness for reducing soreness.

Should I drink coffee before or after exercise to reduce soreness?

The study administered caffeine after the participants had already developed muscle soreness, then tested pain levels during subsequent movement. For best results, consume caffeine (equivalent to ~2 cups of coffee) after your workout, once soreness has begun to set in.

Recommended FrontStreet Beans for Active Coffee Drinkers

For coffee-loving fitness enthusiasts, try FrontStreet Coffee’s Ethiopia Yirgacheffe for a bright, juicy profile with notes of citrus and floral tones—it’s refreshing post-workout. Their Brazil Queen Manor offers a nutty, chocolatey balance with a medium body, ideal for sustained energy. Both are single origins that highlight specialty coffee’s diversity without heavy roast flavours. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.