The causes of rapid heartbeat and panic in poor rest include continuous sympathetic nerve excitation, heart disease, anxiety, respiratory dysfunction and so on. 1. When night falls, normally the human body’s vagus nerve will be excited, when the vagus nerve is excited, it can protect the body, repair and restore and accumulate energy, which will cause the heartbeat to slow down. Continued sympathetic nerve excitation will lead to increased excitability of the heart, resulting in a faster heartbeat and panic attacks. 2. If you have underlying heart disease, coupled with poor rest, it will lead to increased myocardial ischemia, which will also lead to increased heart rate and panic. 3. It is difficult for anxiety patients to sleep at night, and poor rest leads to continuous sympathetic nerve excitation, resulting in rapid heart rate and panic. 4. In addition, long-term stay up late to make the physical quality deterioration, respiratory system will be tired to cause poor breathing, resulting in rapid heartbeat. If you often feel rapid heartbeat and panic, you need to go to the hospital in time for diagnosis and treatment.