Today's the day for free doughnuts

It's Friday, and if that's not enough to make you happy, two major doughnut chains are offering free treats to celebrate National Doughnut Day.

Dunkin' Donuts will be offering customers a free doughnut with any beverage purchase at all locations.

Not to be outdone, Krispy Kreme has announced that all customers will receive a free doughnut, with no purchase necessary.

According to Krispy Kreme's Web site, National Doughnut Day was established in 1938 as a fundraiser for the Salvation Army and to honor women of the Salvation Army who served doughnuts to soldiers during World War I.