Why do I feel like I am going to have a heart attack when I have a panic attack?

because when we experience there will be change in heart beat level, we observe that.so we feel that going to get a heart attack

Many people report feeling the same way during a panic attack. Our bodies are just overwhelmed by all of the activity in our brain and nervous system. Rapid heartbeat, chest pain, and trouble breathing are common symptoms of both panic attacks and heart attacks.

Adrenaline is released when our limbic system is activated. This is preparing your body to run or fight so more blood is pumped to the muscles resilulting in your heart working much harder. If you experience any unusal or painful always get it checked out.

Technically speaking it is due to the increase in adrenaline and the fight or flight response. Basically, your body believes you are in danger and is trying to give you the energy to fight or remove yourself from the danger. Your heart beats faster because of this. Sometimes our bodies just get it wrong though and we are stressed, but not in any physical danger, so there isn't a physical thing to fight or run away from and that can be really overwhelming. When you are having a panic attack do what makes you most comfortable. For me sometimes that means taking deep breaths or just sitting in a dark room with a blanket. Other times the adrenaline gets the best of me and I find it helps to go for a run. This is just what I do though. Do what you are comfortable with, and as always, if you need to talk to someone 7 cups is always available.