It’s wake up time!
I love going back to Japan with my son and spend some time with my parents. However, I never like jet-lag. Adults can understand the time concept, and we try to adjust time difference. On the other hand, children don’t have the concept of time nor effort to adjust to local time. As a result it’s time to have a breakfast and play when they wake up, which can be 2:00am. Dealing with Jet-lag is just harder with children.