The goal is to identify the differences in trait anger among athletes and people who practice sports in general who considered their body structure and physical characteristics had an influence on their athletic performance. The sample consisted of 366 athletes and people who practice sports in general with an age range from 18 to 64 years old (M = 27.76; SD = 9.11). An ad hoc sociodemographic questionnaire and the Trait-State Anger Expression Inventory (STAXI 2) were used to measure the different variables. Results showed that participants who believed that their physical morphology had a negative influence on their performance showed greater levels of: trait anger (p < .05), temperament (p < .01), internal expression (p < .01), external expression (p < .01) and expression index (p < .01). A negative perception of one's own body structure and physical characteristics was associated with higher levels of anger. This result may either be due to the higher levels of anger which may distort one's perception of his/her body structure and physical characteristics, or that a biased perception of the latter may be responsible for the high levels of anger.