and simple down time. working so many more hours means americans now work almost five additional weeks each year than they did in 1979. 35% of americans now work on weekends. and we re sleeping less. according to the cdc, a third of adults now get six hours or less each night. those long hours and lack of sleep can land you in the e.r. recent study found people who work 11 hours or more consistently are at 67% greater risk of having a heart attack. dr. allen taylor is the chief of cardiology at this heart institute. the data shows about a third of heart disease related to stress and that chronic overwork a doubling risk for heart disease so it adds up to implications for heart disease. how was your day? reporter: stress experts say never more important to set limits. deciding when to turn off the e-mail and cell phone, to carve out personal and family time. hello! hello. reporter: for some the moyer work the better. the harder i work the more fun i seem to have.