Blood pressure changes naturally many times a day.Your blood pressure is a reading of the force with which blood is passing through your circulatory system,all humans have a natural daily rise and fall in blood pressure that corresponds with their circadian rhythm.
Head Heaviness and Neck PainOther factors contribute to fluctuations in blood pressure, but the most common one is hypertension, a condition characterized by chronic high blood pressure. ... Other factors, such as stress, emotional upsets and food sensitivities can cause an increase in blood pressure.