What can cause an increase in blood pressure?

Emotional distress can cause an increase in blood pressure due to the body's physiological response to stress. When a person experiences emotional distress, the adrenal glands release stress hormones such as adrenaline and cortisol. These hormones prepare the body for a "fight or flight" response, leading to an increase in heart rate and constriction of blood vessels, both of which raise blood pressure. This response is a natural mechanism meant to handle perceived threats, but chronic emotional distress can lead to prolonged elevations in blood pressure, potentially contributing to health problems over time.

The other options generally do not lead to an increase in blood pressure. Rest and relaxation often promote lower blood pressure by allowing the cardiovascular system to recover and reducing the effects of stress on the body. Fasting, while affecting metabolism, does not typically have a direct impact on increasing blood pressure; instead, it may lead to temporary fluctuations.