Palpitations (rapid heartbeat, often accompanied by panic) occur when you drink strong tea, coffee, or alcohol because the theophylline in tea, caffeine in coffee, and alcohol in wine cause sympathetic nerve excitation and accelerated heart rate, so palpitations can occur. Strong tea and coffee contain substances that cause excitement in the human body, such as theophylline and caffeine. Excessive intake of the human body will stimulate the sympathetic nerves of the human body. Sympathetic nerve excitation will release a variety of neurotransmitters, which will act on the adrenal glands, causing the adrenal glands to secrete a variety of vasoactive substances, or excitatory neurotransmitters and so on. Palpitations can then occur. Alcohol can also make people excited, affecting the sympathetic nerve excitation, myocardial contraction force increased, increase the heart rate, palpitations. So for some patients with heart disease, it is not recommended to drink strong tea, coffee and alcohol to avoid inducing arrhythmia.