You may have noticed many of your co-workers wearing red Friday.

It's National Wear Red Day, part of the American Heart Association's Go Red for Women movement in support of raising awareness about heart disease. 

Cardiovascular disease kills approximately one woman every 80 seconds. 

Go Red for Women advocates for more research and swifter action for women's heart health.

According to the American Heart Association, 64 percent of women who die from heart disease showed no previous symptoms.

Friday morning, a National Wear Red Day Proclamation was held at Chattanooga City Hall where the executive director of the American Heart Association spoke about why the day is celebrated. 

"So by wearing red, and lighting buildings red and celebrating with us and educating about signs and symptoms, we can bring this to the four front, so that may women are taking more steps to know their numbers and hopefully get in front of heart diease all together," Emily Fuller said. 

This is the 15th year for the nationwide push.