A vacation is usually intended to give you a break from a hectic routine and the pressure of completing things under a tight deadline. However, it is always challenging to return after a vacation as people are mostly under the hangover of the good times they had. It's called Post Vacation Syndrome, and the interviewer wants your answer on ways to counter this. Begin answering by discussing the magnitude of this problem and how it impacts the focus, and then swiftly transition your way into the methods where you give importance to easing into your schedule. This means not returning to work in a rush. Talk about a previous instance where you took a vacation and then gave yourself some time to get over it before returning to work. Your response must include the ways you use to tackle this situation. 'I start by listing things, checking my emails, and talking to my supervisor. I pick up on the work left and move on to new projects smoothly. If something seems new or I spot a change, I talk to my teammates to understand the new approach better.'