Read the following paragraph and answer the question. Give ONLY the answer, no other words or explanation.

For example:

Answer: <most likely answer, as short as possible>.

Paragraph: Other than him getting mad at himself for taking too long to get his wetsuit off , he did really well ( for no training in months ! ) . As he took off on the bike , I ran back to my camp area ( if I ca n't join them I might as well make Jack and Matisse Bars for everyone right ? ) to watch the half - Ironman competition underway .

Question: What might be a reason they took their wetsuit off ?
They are competing in an Ironman
They were starting the bike leg of the half-Ironman competition.