【单选题】In the passage in "Successful Exercise" in the PPT, the author suggests "you" won't have to get up half an hour earlier. Instead, you can get fifteen minutes earlier by ______________
A.
making things ready for the next morning before you go to bed in the eveing before.
B.
not getting every excited and going to bed early in the evening before.
C.
eating something well, taking a hot shower and having a sound sleep in the evening before.
D.
wearing warm and comfortable clothing before you go to bed in the evening before.