Context: The most exciting event happened in aquatic centre . 400 m Freestyle women was totally awesome , Adlington from Britain won from an American woman who had hold to her 1st position from the start only to be taken away by Adlington on the last second . The same thing happened in 400 m Freestyle Relay Men , French was leading the way only to be taken on the last second by USA . Both races were incredible .

Question: Why were these swimmers able to take the lead at the last second to win the event ?
Options:
0. The swimmers realize that they would rather come second because theirs less expectation from those who came second in future races
1. The swimmers give up at the end because they do n't truly want to win , the real deserving winner always wins at the end
2. Holding the lead throughout the event is tiring and requires a lot stamina and at the end of the event it is difficult to hold off on someone who is right on your tail
3. None of the above choices .
Answer: 2