That's the way I do! When you are tired of reading a book, watch a movie.
When you watch/read something interesting come to UsingEnglish and share it with us.
Specifically concerning academic presentations, I recommend that you (i) download and watch some presentations in your interest field and (ii) practise it !! In my case, since I do not have native speakers to talk with, I teach English as a way to improve my speaking skills.
Student or Learner