Décalage horaire

The chaos of the last few days is begging to ease off and my fourth full day in Korea felt a little less rushed. Still, I'm getting tired at strange hours, falling asleep in the middle of the day, and generally not getting enough sleep at all - four-and-a-half hours last night. Things should settle down in a few days but it's a bit of an inconvenience to say the least. My girlfriend is suffering equally so at least it's not just my imagination.