During the job interview, you should try to adopt a posture that shows interest but still comes across as being relaxed. You can sit up straight in your chair at the beginning of the interview, with your back against the back of the chair. During a job interview it is better not to fold your arms, because doing this can be interpreted as a defensive move. It is better to let your hands lie loosely on your lap or place them on the armrests of your chair...