Don't forget that anything you do with your body and mind requires carefulness and accuracy. Don't laugh, but sleeping correctly is not less important. On average, one spends about 1/3 of his life for sleeping. Yes, that's true. Others, who like to sleep spend even more, they simply don't realize this.
Now ask yourself - how much time do you spend on sleeping? I should tell you that it depends on your age. The older you get, the less time you have to sleep.
Remember that abusing on sleeping may cause you different problems, starting from ordinary bad mood to serious health dysfunctions.