A new, cautionary study published in Circulation last week suggests that exercising with unusual vigor while you are enraged or emotionally distraught could be dangerous for your heart.

The study looked at the types of events that may trigger heart attacks and results indicate that both strenuous workouts and emotional upheaval, separately, can increase the likelihood of cardiac arrest, but when combined the risk is greatest. An article featured in the New York Times this week discussing the new study does caution that it does not necessarily prove that running while mad is always inadvisable, only that “some workouts and some emotions don’t mix well.” The study relied on data from 12,500 men and women internationally who had recently suffered their first heart attack and focused on what might have set the event off.

Read more in depth about this study and its limitations in this New York Times article.