Exploring the Pros and Cons of Caffeine Consumption for Physical Performance and Sleep Quality

Study Overview

The study reviewed in the article investigates the acute effects of coffee consumption on various health parameters in 100 healthy adults, including cardiac arrhythmias, daily step counts, and sleep outcomes. Participants were randomized to consume caffeinated coffee or avoid caffeine in alternating two-day sequences over a 14-day period. The study aimed to assess the impact of caffeine on cardiac ectopy, arrhythmias, step counts, sleep minutes, and serum glucose levels.

Interpretations and Takeaways

The study found that participants took more steps on days when they consumed coffee, indicating a potential increase in physical activity levels associated with caffeine intake. However, caffeine consumption was also linked to less sleep duration and more daily premature ventricular contractions, highlighting potential drawbacks such as sleep disruption and cardiac irregularities.

The review article emphasizes that while caffeine can offer a boost in energy and performance, individuals should be mindful of potential adverse effects, especially if they experience issues like headaches, poor sleep, or anxiety related to caffeine consumption. It suggests that experimenting with caffeine avoidance might be beneficial for such individuals. Overall, the study underscores the need for personalized approaches to caffeine intake based on individual tolerance and health considerations.


Marcus GM, Rosenthal DG, Nah G, Vittinghoff E, Fang C, Ogomori K, et al. Acute Effects of Coffee Consumption on Health among Ambulatory Adults. N Engl J Med. 2023 Mar 23;388(12):1092–100.

MASS Research Review. “The Pros And Cons Of Caffeine.” Volume 8, Issue 2. Published on February, 2024. Available at https://www.massmember.com/products/mass-subscription/categories/2154593564/posts/2174603280