It's time to pull that red tracksuit out of the closet! February 3 is National Wear Red Day, started in 2003 to bring attention to the fact that heart disease is the No. 1 killer of women. One in 3 women die of heart disease and strokes each year, but many still believe that it's an issue that affects more men than women. So, this Friday, bring heart disease—and your red tracksuit—out of the closet!