Take this conversation:
"NAME_1: Hi NAME_2, how are you?
NAME_2: I'm doing well. How are you adn the kids?
NAME_1: Not too bad. NAME_3 is sick this week, so we're on high alert.
NAME_2: Wow I can imagine. Did you get any sleep this week? :-D
NAME_1: "
Give a short rationale for "I've been up all week" being the next message, without repeating the message itself