With the big relationship problems in “The Big Bang Theory” Season 9 taking a back seat in episode 5, there will be time for Sheldon (Jim Parsons), Leonard (Johnny Galecki), and the gang to focus on some other aspects of their lives – physical fitness, for example. Yes, the guys are taking fencing lessons in “The Perspiration Implementation” and a few sneak peek videos from the episode reveal that athletics don’t exactly come natural to the group.

According to the synopsis for episode 5, Penny accuses her new husband of not having the coordination to play sports. That will lead the whole gang -- Leonard, Sheldon, Howard (Simon Helberg), and Raj (Kunal Nayyar) -- to decide to take a fencing lesson. However, one sneak peek video reveals that Leonard is not the only one taking heat from his significant other about their health.

Watch Howard working on a way to trick Bernadette (Melissa Rauch) into thinking he is exercising in episode 5 below:

When the guys finally show up at their fencing lesson, they have a hard time taking it seriously. Their teacher, Barry Kripke (John Ross Bowie), tries to teach them proper technique, but they are more interested in pretending they are characters from “Game of Thrones” or “The Princess Bride.” Plus, Sheldon cannot even come to a decision about which foot is his dominant foot – “They are both submissive” – to get in the correct stance.

Watch the guys fail at their fencing lesson in episode 5 below:

Despite the fun and games, one relationship issue might still rear its head. The synopsis reveals that Barry will catch some feelings for Amy (Mayim Bialik) during the course of the fencing lesson. That will not make Sheldon too happy.

Fans will have to tune in to see how it all plays out. “The Big Bang Theory” airs Mondays at 8 p.m. EDT on CBS.