Looking at oneself in the rearview mirror while driving can increase the risk of an accident because it **distracts the driver**. When a driver focuses on something not directly related to driving, such as looking at themselves in the mirror, a **distraction** occurs. During this time, the driver is not paying attention to the road, which can be dangerous.

- **Distractions**: Distractions are a common cause of accidents. They can occur when the driver focuses on something inside or outside the vehicle that is not related to driving, such as looking at a shop window or using a mobile phone. Looking at oneself in the rearview mirror falls into this category of distractions.

- **Attention to the road**: It is crucial that drivers keep their attention on the road and the surrounding environment. Although it is necessary to use the rearview mirrors to see what is happening behind and to the sides of the vehicle, this should be done quickly and briefly so as not to lose focus on the main driving task.

- **Blind spots**: Rearview mirrors do not cover all angles, leaving areas called **blind spots**. Therefore, it is important that drivers do not get distracted by looking too long in the mirrors, as this could prevent them from seeing a vehicle in the blind spot.

In summary, looking at oneself in the rearview mirror while driving can be a distraction that diverts the driver's attention from the road, thus increasing the risk of an accident.