Conversation so far:
What is Caitlyn Jenner most known for, impact wise?
winning the Olympic decathlon.
What gender were they when they last competed?
CANNOTANSWER.
How impact did Caitlyn Jenner have?
Jenner took an American flag from a spectator and carried it during the victory lap, starting a tradition that is now common among winning athletes.
Did they win an award or title because of their success?
As a result of winning the Olympic decathlon, Jenner became a national hero and received the James E.
Sullivan Award.

Question: Why did they stop competing?
Self-contained rewrite: Why did Caitlyn Jenner stop competing?