Based on the context and the answer, generate a question. 

Context: When I was in Kenya , I got down to an anemic and unattractive 155 lbs . That was admittedly too skinny . But last weekend , while cat sitting for a friend with an electronic scale , I stepped on ( fully clothed ) to see a rather unexpected number : 206 .

Answer:

they were taking care of the cat



Why were they at their friend 's house ?