Calibrate me please and monitor my progress.
I will go up.
I will go down.
I am mercurial in every sense.
You change me. You all do.
I will rise and fall to your heat and cold.
Unseasonable highs and plummeting lows.
That’s how I go.That’s how it flows.
Monitor me always
I’ll do you no harm.
But I’m quicksilver in your blood.
I might take an arm.