Read the following context and answer the question.
Context: And I did n't care about anyone and just sat down each time the pain was unbearable . Then I 'll take a pack of ice and plaster it over my ankle . After work , we were all in such a good mood that some of us headed down to Geylang to get some food . Suzie , Mei and Ana were in uniform .
Question: Why did the author likely put ice on their ankle ?
Answer:


Because they must have injured it while they were at work .