Key Takeaways

Blood pressure readings start to rise just before waking and peak at around 10:00 a.m.

These fluctuations are normal and largely directed by your circadian rhythm (the body's internal clock).

Excessive surges in morning blood pressure, as well as abnormal drops in morning blood pressure, may lead to serious cardiovascular events and other health concerns.

Blood pressure typically rises around 6:00 a.m. as you start to awaken from sleep and peaks around 10:00 a.m., commonly known as the "morning surge." However, not everyone follows this pattern, and some will experience "reverse dipping," in which the nighttime blood pressure is higher than the daytime blood pressure.

What Causes Blood Pressure to Fluctuate?

Numerous physiological and biochemical events contribute to

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