It is very important when returning from a vacation to remember certain things. Traveling is fun, but it racks havoc on the body. Sleeping, eating, exercising, and everything else isn't the same when you are at home in your "normal" environment. When you hop on the scale after returning - consider added salt, less water, less intense exercise. All things to consider before berating yourself for overdoing vacation - just try to get back to normal ASAP after returning.