as Dr. Grant Linkletter, who continues to suffer as Sheldon’s reluctant mentor.

The file size for a 1080p episode is around 2-3 GB.

Originally aired on , this episode was directed by Melissa Joan Hart and features guest appearances by Jason Alexander and Ed Begley Jr.. Plot Summary: The Lab and the Leotard

Always looking for a way to make a quick buck, Georgie decides to capitalize on the 1990s aerobics craze. He recruits the school's flamboyant drama teacher, Mr. Lundy (played by Jason Alexander), to create a Western-themed exercise video. The partnership quickly sours when Lundy demands 80% of the profits, leading to a hilarious clash of egos. Cast and Guest Stars

This episode brings back several fan-favorite recurring characters:

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The episode follows two main story arcs that highlight the ambitious (and often misguided) nature of the Cooper boys:

As Sheldon works on his model, he becomes more and more obsessed with accuracy and starts to neglect his family and friends. Missy tries to get Sheldon to lighten up and have some fun, but he's too focused on his project.

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Sheldon becomes fascinated with understanding the COVID-19 pandemic and its spread, using his knowledge of physics and math to try to make sense of it. He decides to create a model to predict the spread of the virus, which leads to some comedic moments.