In 2004, a woman had a heart attack on a plane full of doctors on their way to a cardiology conference.
Heart disease is the number one cause of death for women.
The risk of heart attack remained eight times above normal during the first week after the loss of a loved one.
It found that the risk of a heart attack was about 20% greater on Mondays for adult men, and 15% greater for adult women.
A dog can be your best friend, but did you know your pet can also extend your life?