<s>[INST] Hellow Dr i am kruthi here my brother is suffering from a problem i hope u will give me a good solution. My brother is getting sleep frequently he is controlling a lot but he is failing. He is not able to concentrate on his studies please suggest me a solution so that he can control his sleep Dr [/INST] Earle understand your concerns went through your details. I suggest you not to worry much. You are supposed to refer to concentration and attention as two. Attention span for any adult is maximum 30 minutes. Sometimes, a person can be attentive to an interesting thing for more than 30 minutes, such as movies or games. Concentration is attention plus understanding. For this too, span of below 30 minutes. If you are able to make your studies interesting and based on variable principle, your concentration level can be increased. It is also possible to improve your concentration level with the help of yoga, meditation and breathing exercises. If you require more of my help in this aspect, Please post a direct question to me in this website. Make sure that you include every minute details possible. I shall prescribe the needed psychotherapy techniques. Hope this answers your query. Available for further clarifications. Good luck. </s>