First of all thanks for the comment, the title, and the opportunity to clarify what I said :)

By extra activities I had in mind anything more interesting than studying (pretty much everything especially if you study French). If you are referring to those exciting activities then yes I definitely recommend studying before. I don't know about you, but after those activities the last thing I feel like doing is studying.

Good luck with your studies ;)

P.S. What I really had in mind when I wrote the statement of exciting activities was playing computer games, browsing the internet, reading jokes, youtube etc. You might not define that really exciting unless you're a bit on the nerdy side, or your partner is living miles away :))