I am a fourth year who has to do a sub-I either in the MICU month or the general medicine ward. I will be doing a prelim medicine year next year before I start residency. I have heard some people say not to do the ICU month because it is a lot of work and you should be taking it easy during the fourth year and you'll learn it during intern year anyway. I have heard others say that you learn a lot and that it helps during intern year. Opinions highly appreciated.