is mbbs so difficult that one has to lose sleep everyday?

Yes Nothing comes easily in this world,committe to your studies,ignore unwanted activities,concentrate and prepare notes yourself,take much guidance from superiors,then success will be urs,go ahead,all the best for your future......

this is not true at all. but ya have to study hard in almost all professional courses like MBBS , B.Tech E.T.C if you do regular studies then their is no need to lose your sleep.

Its all upon your IQ level and each person needs a different time interval to understand any thing means one person may take one hour to memorize one thing and another may take only 15 minutes for the same.