I didn't know when I fell asleep, but by the time I woke up, daylight had already spilled into the room.

　　Perhaps it was because the bedroom window had been left open all night, letting the cold wind blow through, but when I got up, I felt light-headed and slightly feverish.

　　Natalie, a coach at South City's largest taekwondo academy, urged me to take the day off. "Stay home and rest today. You don't look well."

　　I agreed, partly because I was worried ...