I am 20 years old I always keep on feeling lethargic and drowsy throughout the day Moreover I keep on feeling weak bcz of this I am not able to do anything proper neither any work of my home nor my studies I am preparing for net n for that I need you b active n fresh but in my case it is not like that I don't feel fresh n active instead I feel sleepy most of the time even after I have my meals then also I don't feel any difference n the same condition continues please help me out how can I b active. I m.also not able to control my sleep when I sleep at night I am not able to wake up in the morning properly n when I wake up somehow I feel lethargic please help me out so that I can b normal like the girls of my age n I can concentrate on my studies.