Phoebe and Rachel start to go to self defense classes, and Ross talks to them that they need to know a concept called ''Unagi', that he learned when he did karate classes. Unagi is a state of total awareness that Ross says it is essential to everybody who practices martial arts, but he is not aware all the time as he says, since Rachel and Phoebe are always trying to scare him to see if he really masters the ' Unagi' .
Joey needs some money for the pictures of his Book, that are more expensive then he imagined it would be. He wants to go back to the lab studies, the problem is that the next study only serves for people who are identical twins, and this is not Joey's case. In order to receive some money, Joey tries to find an actor who looks like him to pretend to be his identical twin.
Chandler has difficulties to find a good Valentine's present to Monica, specially because they decided to make their own presents. He gives her a tape full of songs, but what he doesn't remember is that Janice made that tape for him.
Joey needs some money for the pictures of his Book, that are more expensive then he imagined it would be. He wants to go back to the lab studies, the problem is that the next study only serves for people who are identical twins, and this is not Joey's case. In order to receive some money, Joey tries to find an actor who looks like him to pretend to be his identical twin.
Chandler has difficulties to find a good Valentine's present to Monica, specially because they decided to make their own presents. He gives her a tape full of songs, but what he doesn't remember is that Janice made that tape for him.