01 Early Morning Upon Waking Up
Research indicates that the peak period for heart attacks is between 6-9 AM. During this time, the body has lower water content, relatively thicker blood, and, coupled with the slower heart rate and slower blood flow upon waking up, is more prone to forming blood clots.
Furthermore, after a night's rest, sympathetic nervous system activity significantly increases, leading to a phenomenon known as "morning surge" in blood pressure, which can easily trigger the occurrence of cardiovascular diseases.
