hello,

sorry but be it a lecture at IIM a or any institution , the student should not sleep. you may not be caught by the teacher if you sleep or at many places the teacher may not bother if you listen or you choose to sleep , but above everything it will be your loss. you will not be able to get that topic , as every topic and lecture is very much important there.

hope it helps,

all the best.

Hey student,

The short answer of the your question is no as the lectures are really important and will not be repeated for anyone and it will be the students loss that he sleeps in between during the lesson and not of the institute.

All the best student,

hope this helps you