An opportunity to re-read lessons is to study for two or three hours a day on a normal day but for some reason you do not get to work these two or three hours a day. On a day like this it is better to re-read the note without confusing the pattern you have learned. The reason is that the brain works hard for methods like active recall that we talked about earlier, for which both the body and the brain are relaxed. If you get good results from re-reading notes like active recall, spaced repetition No need to think about methods, But if you do not get the desired result, you can succeed by switching to those methods.