It sounds like the adrenaline trying to work its way out of your system. Our bodies release all this adrenaline during an attack. It's meant to prepare us to fight or run from the danger, but with panic, there is no danger. Still, we are left with this mess of adrenaline.

Can you keep a few weights in your cubicle? Do some curls or other exercises to work off the adrenaline? You could even put a dumbbell between your ankles and lift your legs in the air from a seated position. As a bonus, you will have some toned arms and legs!