According to research that was recently presented at the American Heart Association's Scientific Sessions 2021, coffee drinkers can find themselves experiencing irregular heartbeats if they consume too much of their favorite brew.

The study (which was funded in part by the University of California, San Francisco Division of Cardiology) observed 100 volunteers who were an average of 38 years old.

When the participants drank more than one cup of coffee, the readings from the ECG devices they wore—which monitor heart rhythm—recorded twice the amount, or a 54% increase, of premature ventricular contractions coming from the lower chambers of the heart.