Read the following context and answer the question.
Context: I ca n't update my blog the normal way at the minute ... so I ' m trying this . It 's the " email " feature LJ has . I 'm in the van , it 's the middle of the night , and I got up to pee andcouldn't fall back asleep . I ' m near Rapid City South Dakota , and it'sbeautiful here . I went SWIMMING last night ! I never swim ! ! !
Question: Why ca n't I fall back asleep ?
Answer:


None of the above choices .