A recent, long-term scientific study has shown that maintaining a regular sleep schedule may be more crucial for heart health than the total number of daily sleep hours. The research, based on tracking the data of thousands of participants for years, revealed that constantly changing bedtimes significantly increases the likelihood of developing cardiovascular diseases, particularly among individuals who sleep for short periods. Researchers attributed this risk to the disruption of the body's biological clock, which negatively affects blood pressure, pulse rates, and stress levels, emphasizing that sleep schedule regularity is a critical preventive measure.