Why do I feel palpitations when I wake up in the morning?

Waking up in the morning with palpitations may be caused by multiple factors. On one hand, this could be a normal phenomenon, as sympathetic nerve activity typically increases upon waking, leading to an elevated heart rate and stronger cardiac contractions, which may result in the sensation of palpitations. On the other hand, palpitations may also be associated with various medical conditions, such as hypoglycemia, anemia, arrhythmia, and coronary artery atherosclerotic heart disease. During hypoglycemia, insufficient glucose levels in the body may lead to impaired blood circulation and cause palpitations. Anemia may result in inadequate oxygen and blood supply to the heart, triggering palpitations. Cardiac diseases such as arrhythmia and coronary heart disease may also lead to palpitations. Other contributing factors include physiological causes such as excessive fatigue, prolonged staying up late, sleep deprivation, and poor sleep quality, as well as pathological causes such as hyperthyroidism, myocardial ischemia, and autonomic nervous system dysfunction. For occasional palpitations, specific treatment is generally not required; symptoms can be relieved through adjusting作息 (作息 should be translated as "lifestyle habits" or "daily routines"), adequate rest, and other measures. If palpitations occur frequently or are accompanied by other uncomfortable symptoms, prompt medical consultation is recommended to identify the underlying cause through relevant examinations, and targeted treatment should be conducted under a physician's guidance.