here's how you too can be a world beater at vacation. >> usa! usa! usa! >> reporter: tip number one, short vacations are great. like sleep, regular bursts are restorative, but try for longer. day one. day eight. the journal of happiness studies claims holiday happiness peaks day eight. leave friday night, come home a week from sunday, just five days off work and you still get that magic eighth day. >> it's definitely important to unplug. however, we also want to be realistic about the culture and the time that we live in. >> reporter: tip number two, take a break from the gadgets that rule regular life. [ snoring ] don't set an alarm. limit e-mail to just one burst per day or cold turkey. this boss has a policy. >> go away! it's not just e-mail, nick. you are prohibited from contacting anybody at work! you shouldn't be calling me. shame on you.