You will be given a definition of a task first, then some input of the task.
In this task, you're given a context passage, followed by a question that needs to be answered. Based on the paragraph, you must write unambiguous answers to the questions and your answer must refer to a specific phrase from the paragraph. If multiple answers seem to exist, write the answer that is the most plausible.

So the result was 700 m swimming ; 350 m breaststroke and 350 m front crawl legs - all done in 23 minutes ! I am so proud of myself ! I might also soon chance it and do a few lengths of crawl with arms - I don't know why that frightens me so , but it does . 
Question: What did I do before swimming ?
Output:
I warmed - up my muscles .