How Coffee Caffeine Cuts Muscle Soreness by Nearly Half

If you’ve ever done legs day—or any unfamiliar workout—and woken up the next morning barely able to walk, you’re familiar with delayed-onset muscle soreness (DOMS). While stretching and ice baths get most of the attention, recent research suggests something far more everyday might offer real relief.

The short answer? Yes—about as much caffeine as you’d find in two cups of coffee can reduce muscle soreness by nearly half, at least for those who don’t regularly drink coffee.

What the Study Tested

Researchers at the University of Georgia conducted an experiment published in The Journal of Pain. They worked with nine female college students who neither drank coffee often nor did regular exercise. After putting them through one to two days of physical training—enough to trigger muscle soreness—the researchers gave some participants a caffeinated beverage equivalent to roughly two cups of coffee, while others received a placebo drink. Then they had them perform leg exercises again.

What They Found

Those who consumed the caffeine reported 48% less muscle soreness during the post-exercise test than the placebo group. Even in subsequent movement, their pain levels remained lower—down by about 26%. The effect was clear: for non-habitual coffee drinkers, a moderate caffeine dose made the soreness significantly more bearable.

Why It Matters for Non-Coffee Drinkers

Caffeine’s pain-reducing impact on muscles seems most effective in people who don’t regularly consume coffee. The study specifically notes that the benefits are limited for those with a high daily caffeine intake. That means if you’re already drinking several cups a day, you’re less likely to see the same soreness relief as someone who rarely drinks coffee.

How Much Caffeine Is in Two Cups of Coffee?

While caffeine content varies, a standard 8-ounce (240 ml) cup of brewed coffee typically contains around 95 mg of caffeine. Two such cups would provide roughly 190 mg of caffeine—enough, in this study, to produce a marked reduction in soreness among infrequent coffee drinkers after strenuous exercise.

Frequently Asked Questions

How much caffeine reduces muscle soreness according to the study?

The University of Georgia study found that consuming caffeine equivalent to about two cups of coffee reduced muscle soreness by 48% in non-regular coffee drinkers after exercise. In later movement, soreness was still reduced by 26%.

Does this caffeine benefit apply to regular coffee drinkers?

No. The study specifically states that the pain-relieving effects of caffeine on muscle soreness are much weaker or absent in people who drink coffee frequently. The results apply mainly to those who do not have a habit of regular caffeine consumption.

What kind of exercise caused the soreness in the study?

The study participants performed physical training over one to two days that was enough to trigger typical delayed-onset muscle soreness (DOMS), especially in the legs. The exact exercises weren’t specified, but they were sufficient to induce noticeable soreness afterward.

How was the caffeine given to the participants?

Some participants were given a caffeinated beverage containing an amount of caffeine equal to approximately two cups of coffee. The control group received a placebo drink that did not contain caffeine, allowing researchers to compare the effects directly.

Why does caffeine reduce soreness more in non-coffee drinkers?

The study suggests that regular caffeine intake leads to a tolerance effect, reducing its ability to alleviate muscle pain. Non-habitual coffee drinkers respond more strongly to the same caffeine dose, making the pain relief more noticeable in their case.

Recommended FrontStreet Coffee Beans for Recovery Days

Try FrontStreet Coffee’s Ethiopia Yirgacheffe for a bright, juicy cup with citrus and floral notes to perk you up without over-caffeinating. Their Classic Blend offers balanced chocolate and nuts for a smoother, everyday option. Both are great picks to enjoy post-workout without disrupting your recovery. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.