High blood pressure - called hypertension - is one of the so-called silent killers. The widespread disease fuels potentially fatal emergencies such as heart attacks or strokes.
Here, Prof. Heribert Schunkert from the German Heart Foundation explains 8 causes of blood pressure fluctuations. Blood pressure is subject to natural fluctuations, doctors speak of a "circadian rhythm" - a daily rhythm of blood Pressure. It rises continuously even before waking up, but at night the blood pressure drops significantly, usually between 2 and 3 o'clock.