What are two causes of blood pressure changes that might occur in a person with given day?

1. Physical activity: Blood pressure typically increases during physical activity as the heart pumps harder and faster to meet the increased demand for oxygen and nutrients in the muscles.

2. Stress and emotional state: Elevated stress levels and strong emotions, such as anger or anxiety, can cause a temporary increase in blood pressure. Blood pressure usually return to normal levels once the stressful situation has passed.