i started smoking a lot and im getting the best grades ive ever gotten in school and my mom even says that ive changed and im such a better person now haha she doesnt even know i smoke i was thinking about telling her but she would probably gt mad. But i make sure i get my school shit done, but i do feel tha lasyness and i also sleep a lot. My cousin smoked like everyday and he graduated at the top if his class and is getting a 4.0 + in college and he still does it often. It just depends on how much you care...