Sometimes your sleep can relax you, and sometimes it actually exhaust you.
The one and only reason is your dreams.
Sometimes they can really exhaust you.
Do you want to know why?
When we are asleep and when we see dreams that time our brain gets very active and the more physical work we do in our dreams, the more work our brain has to do to keep the movie in our dreams going. Hence it drains more energy out of you.
Have you ever thought that why you feel tired especially your head, eyes, etc. after a dream in which you were running very hard for example?
Because in reality it's not you who is running but your brain that is trying to keep up with your dreams pace.
Now, brain needs energy to run, so it takes that in the form of glucose which is present in our body. Thus we are deprived of our energy.
For more such interesting scientific paradoxical topics, refer following links:
1) Three Most Controversial Topics: There are three articles which have seen more controversy than expected. Find it all by yourself along with the reason.
2) Smoking is good for health, the title itself contradicts the notion which is being created in the minds of the people. So, this topic will attract controversy. However, you must read this article carefully to understand the paradox which smoking creates.
3) Why do Men Rape? , although I haven't expected any controversy related to this topic but then it has been one of the most controversial topic in the most odd ways. Despite, the fact it tries to make a scientific and logical explanation of this question, this topic has viewed in a different sense.
4) Vegetarianism: An Elixir for Life: A must read topic to give great ideas about ways to prevent global warming.
5) Future Decoded: One of my most controversial topics. Read it and decide yourself.
6) Man in Danger: A topic which I expected least to be controversial but is still facing a controversy. A topic which says that males are weakening and women are becoming strong.
7) Biogas: Is It a Future?: One of most favorite future technology might not be as good as it appears.
8) Autotrophic Humans: A very weird way to solve food crisis.
9) How to Make Your Problems Easy?: A very funny scientific explanation to this question.
10) DNA Dove Birds: What if the friendship bands are labeled with DNA?
11) How to Use Urine to Light House?: A very dirty way to solve energy crisis.
12) How to Solve the Water Shortage: A very weird way to solve this problem. Just read and you will know what I mean?
13) Light Emitting Plants: A very weird but true thing, which is one the latest developments of science.
14) Plastic Milk: A very weird topic, which tells a new way to make plastic.
