The Big Bang Theory episode ‘The Cohabitation Experimentation’ is mostly about Sheldon (Jim Parsons) and Amy (Mayim Bialik). They decide to move in together after Amy’s apartment is ruin from flooding issues. The other storyline is about Howard (Simon Helberg) and Bernadette (Melissa Rauch) finding out the gender of their baby. That said — Penny (Kaley Cuoco) and Leonard (Johnny Galecki) do make memorable appearances.
In one scene, Penny is seen dancng in a sleeveless top and short-shorts. In another, she’s having a chat with Sheldon, still in the sleeveless top which reveals actress Cuoco’s major muscles. Cuoco told Shape magazine: “I love being toned and having muscle; it’s so sexy and beautiful.” Cuoco said “And I owe it 100 percent to yoga” but she also owes a great deal of that muscle definition to horseback riding. The Big Bang Theory airs Mondays at 8pm on CBS.