As evidence continues to support a link between stress, heart disease and a slew of other ailments, national footwear retailer Flip Flop Shops has stepped up to the plate with a campaign that declares June as Stress-Free America month with grassroots protests around the nation, fundraising for the American Heart Association and an aggressive effort to convince corporate America to relax their workplace cultures. As part of the campaign, companies are urged to sign this online pledge committing to establishing “Flip Flop Fridays” in their workplace in June, and donating $2 to the AHA for every employee that wears flip flops each Friday of the month.