Usually, a heart rate within 60-100 beats per minute is normal. If a patient has an accelerated heart rate, there are several factors as follows: 1. Occasional accelerated heart rate will occur when consuming stimulating foods, such as strong tea or coffee on an empty stomach, or when drinking too much alcohol. 2. Occasional accelerated heart rate will occur when there is excessive mental tension, such as sympathetic overexcitation, or relatively poor mental condition, such as excessive tension, excessive anxiety, or excessive excitement. 3, Occasional rapid heartbeat may occur in the presence of ischemic and hypoxic changes in the heart due to parenchymal heart disease, such as coronary atherosclerotic heart disease, arrhythmia, unstable angina, acute myocarditis, etc. 4. Occasional rapid heartbeat may also occur in the presence of endocrine metabolic diseases, such as hyperthyroidism, etc.