Respected doctors, I am male aged 23 height 5.5 weight 55. Vegetarian. Non smoker and non alcoholic person I used to be average student now I will be appearing for my cs executive exam which is to started from 21 dec I am not able to remember anything quickly. I also cant concentrate late night study. I can study upto 10.30 pm only Is there any medicine or foods which can help me boost my mind and help me remember anything I read quickly also make me active for study preparation in night also. Thanks.