Feeling tired in dreams is often the literal reflection of a situation in real life. It is important to try to remember what the cause was in the dream and then interpret its symbolism. Perhaps, you have not yet noticed the real reason for the excessive fatigue that you suffer.
Gallery of dreams
Reading in dream
Sometimes you will not be able to differentiate lucid dream. If you want to be sure, try reading a simple sentence, if you are able to read then you are in wakeful stage if not you are in lucid dreaming. Studies show that you cannot read while dreaming or you will not find the repeated sentences one more time.
Enhance your grades
Most of the kids, ages 10 to 16 are suffering breathing disorder when they sleep. It could be sleep apnea, snoring, and other kinds of interrupted breathing disorders. It's been said that students suffering from such have problems in terms of concentrating and learning, which can surely lead to a functional impairment at their school. Even college students who do not get enough of sleep at night have worse grades. Well, sacrificing sleep in order to meet some sort of deadline can be ideal, but depriving oneself to sleep will surely impair learning, which is not good for students.