阅读理解。 根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，选项中有一

     As with everything in life, there is a right way to sleep in a manner that is productive in dream recall.
Relaxation and good sleeping habits are necessary. There is "sleep debt" that occurs when you regularly
do not get enough sleep. If so, you'll sleep too deep to remember your dreams, so follow regular habits.
Before you leap into bed, review these steps: 
     1._____ This can be done with nothing more than peace and quiet. If you choose, use your favorite
relaxation tapes, or just some peaceful music.
     2._____ As you start to sleep, pay attention to the main theme. This will give you a clue as to what
your dream may end up being based on. Also, by keeping your mind on what you what to dream about
is a good way to dream about one particular issue.
     Give yourself a suggestion to remember your dream. 3.______  In order to do so, giving yourself a
suggestion is simple. Just keep in mind, and randomly bring to a surface a little thought like "I will
remember my dream."
     Plan on waking up slowly and peacefully. 4._____ Regardless of what anyone may have told you, it
is a fact that adult human beings NEED a minimum of eight hours' sleep in order to be fully rested. Not
getting enough sleep is the number one reason for not remembering your dreams!
     5._____ Eat a well-balanced diet. Poor nutrition is also an extremely common cause for failure to
recall dreams.