Gotta get warmed up again....it's so cold I don't even have a name for this

I used to be better at expressing
But what is there left to express
All of my heart has been exhausted
That's where my words came from...
From a combination of electric pulses and bloody valves
A stream of steam

But now I've learned a few things
The pulses are a smooth current
Coming from halogen gases
Hopping along into a train of smoke