Leonard, Raj and Howard are eating at the cafeteria. Howard says he has invented a new game: Emily or Cinnamon. Players have to guess whether quotes that Howard has heard Raj say are about his girlfriend Emily or his dog Cinnamon. Raj insists that he can't be embarrassed since both of them love him. First quote: I want you to know that the bed seems so lonely without you in it. Cinnamon. Second quote: Check it out, I got us matching sweaters. Cinnamon. Leonard saw the Christmas card photo that Raj sent to everyone. Raj says that a man can care about a girl and his dog, it's not strange. Leonard heard him say that to Emily. Sheldon arrives and explains that after talking to Penny. She is working harder to stay attractive in her relationship than he is. Leonard pushes his cake away from his place. Also Sheldon thinks that he has created too pleasant of an environment to work in. To maximize performance he must create a state of productive anxiety. He wants the guys to go out of their way to make his life miserable which they are glad to do.
Sheldon is in Amy's lab wearing a cap with sensors on it and taking a test to set a baseline for his work performance. Since he finished a maze, he wants a treat like a mouse would have been rewarded with. Amy reminds him that his brain would also have been removed with tweezers. To check his problem solving rate, Amy starts to make noises rubbing the outside of a balloon. Sheldon gets annoyed and pops the balloon. Sheldon was aiming for her heart. She needs to irritate him to find his optimal anxiety zone. Sheldon vetoed tickling, polka music and watching Amy eat a banana. She eats it sideways because "that's the way a good girl does it", according to her mother. Amy explains that he is a great scientist who needs to be patient until he makes his scientific breakthrough. Also if he only does solid research, what does it matter? Sheldon feels that she is insulting him which drives his anxiety level up. This result makes him happy which drive the level down. Frustrated his level goes up again starting an anxiety cycle that he continues.
[S8E13] The Anxiety Optimization