[00:00.56]Doctor, I haven't been able to get enough sleep lately, and I'm too tired to concentrate in class.
[00:06.70]Well, you know, spending too much time indoors with all that artificial lighting can do that to you.
[00:12.45]Your body loses its track of whether it is day or night.
[00:16.61]What does the man imply?
[00:16.62]A) The woman is making too big a fuss about her condition.
[00:16.63]B) Fatigue is a typical symptom of lack of exercise.
[00:16.64]C) The woman should spend more time outdoors.
[00:16.65]D) People tend to work longer hours with artificial lighting.