You can take a little pain,
Your discomfort is medicine's gain.
Let's hook you up, apply the heat.
Right height, right weight, you'll do a treat.
In goes the drug, you're unaware
Of any analgesics, there.
Now you're getting some relief,
Still in the dark with no belief.
When you know what to expect,
The medics note a strange effect.
Prof says, "…phenomenal…it's really cool."
Hey, your brain's a useful tool.
© Martin Hodges
Negative experiences can stop painkillers working