Losing your cool at work may not be as bad as previously thought. A study by Harvard Medical School found those who repress frustration are three times as likely to say they've reached their limit, the BBC reports.

The team followed 824 people for 44 years, and found negative emotions like fear and anger allow workers to focus attention. That's not a license to go on a rampage, however.

"We all feel anger, but individuals who learn how to express their anger while avoiding the explosive and self-destructive consequences of unbridled fury have achieved something incredibly powerful in terms of overall emotional growth and mental health," Professor George Vaillant, lead author of the Harvard study said.