I am feeling sleepy throughout the day, I woke up at 8 n hv tea then breakfast at 11 then go for classes at 12. In the first two hours of class I always gets too sleepy. When I try to focus then after 5 minutes of that I am boasting. It is colder than outside on 3rd floor. I drink water around after every 15 minutes. It becomes really hard for me sit in class. Kindly help. I take lunch at 5 pm n dinner at 9 pm went to bed at 11 pm. Thanks.