下面文章中有4处需要添加小标题。请从以下选项（A、B、C、D和E）中选出符合各段意思的小标题, 选项中有一项是多余选项。
A. Early to Bed, Early to Rise
B. Read Challenging Books
C. Relax yourself
D. Minimize Television Watching
E. Take Time to Reflect
Five Simple Ways to Increase Your Intelligence
Your brain needs exercise just like a muscle. If you
use it often and in the right ways, you will become a more skilled thinker and
increase your ability to focus.
Here are 5 simple ways anyone can squeeze a bit more
productivity out of the old gray matter.
1. __________-This is a hard sell. People love
vegetating in front of the television, myself included more often than I’d
like. The problem is watching television doesn’t use your mental capacity OR
allow it to recharge. It’s like having the energy sapped out of a muscle
without the health benefits of exercise.
When you feel like relaxing, try reading a book
instead. If you’re too tired, listen to some music. When you’re with your
friends or family, leave the tube off and have a conversation. All of these
things use your mind more than television and allow you to relax.
Exercise- I used to think that I'd learn more by not
exercising and using the time to read a book instead. But I realized that time
spent exercising always leads to greater learning because it improves
productivity during the time afterwards. Using your body clears your head and
creates a wave of energy. Afterwards, you feel invigorated（精力充沛）and can concentrate more easily.
2. __________-Many people like to read popular
suspense fiction, but generally these books aren't mentally stimulating. If you
want to improve your thinking and writing ability you should read books that
make you focus. Reading a classic novel can change your view of the world and
will make you think in more precise, elegant English. Don’t be afraid to look
up a word if you don’t know it, and don’t be afraid of dense passages. Take
your time, re-read when necessary, and you’ll soon grow accustomed to the
author’s style.
3. __________-Nothing makes it harder to concentrate
than sleep deprivation. You'll be most rejuvenated if you go to bed early and
don’t sleep more than 8 hours. If you stay up late and compensate by sleeping
late, you’ll wake up lethargic（无精打采）and have trouble focusing.
In my experience the early morning hours are the most tranquil and productive.
Waking up early gives you more productive hours and maximizes your mental
acuity（敏锐）all day.
If you have the opportunity, take 10-20 minute naps
when you are hit with a wave of drowsiness. Anything longer will make you
lethargic, but a short nap will refresh you.
4. __________-Often our lives get so hectic that we
become overwhelmed without even realizing it. It becomes difficult to
concentrate because nagging thoughts keep interrupting. Spending some time
alone in reflection gives you a chance to organize your thoughts and prioritize
your responsibilities. Afterwards, you’ll have a better understanding of what's
important and what isn’t. The unimportant stuff won’t bother you anymore and
your mind will feel less encumbered.
Conclusion-I hope you aren’t disappointed that none of
the techniques I've proposed are revolutionary. But simple, unexciting answers
are often the most valid. The challenge is having the will to adhere to them.
If you succeed in following these 5 tips, you’ll be rewarded with increased
mental acuity and retention of knowledge.
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