Referred pain is when you feel pain in a part of your body that's not the part that's causing the pain.
A common example is when a heart attack causes pain in your shoulder or jaw.
In other words,
The experience of your body is not your body.
Under normal circumstances,
There is a correspondence.
If you feel pain in your toe,
There is probably something wrong with your toe.
But those are actually two different toes.
The first one is part of your body image,
Or the representation of your body in your mind.
The second is part of your physical body,
Which you never experience directly.
Your body image is all you ever experience.
When practicing meditation,
You may experience strange sensations in your body.
If you meditate on chakras or energy centers in your body,
You are likely to feel them there.
You may experience kundalini rising up your spine.
It should not surprise you that chakras and kundalini do not exist anywhere in your physical body outside of your brain.
The fact is,
Neither does any experience of your body.
It's all in your head.
So you can cause bodily hallucinations through meditation.
So what?
So your body image is another way of interacting with the rest of your brain and your unconscious intelligence.
This is how placebo works.
Simply wanting to feel love for all is not going to be as effective as a heart-centered meditation.