When you panic there is a great surge of tension that waves all over your body.
You breathing becomes heavy and your hearing is dulled. Your heart beats faster than you can imagine and you are certain that it will come out of your chest at any moment.
With all due respect, you just want to smack the person in the face who is telling you to calm down - they just do not understand.
If this seems familiar to you then you should have a look at this product that will help to get rid of your problems of panicking