Central Reverse Polarity - Magnetic Therapy

From what I have read, Central Reverse Polarity magnets sounds like a crock to me, but I would like someone here who has physics knowledge to explain it.

It comes from the Bioflow range and is one of their major marketing explanations for how the bracelets etc work.

I don't have an axe to grind here - I've tried this and it works, whether that is a placebo effect or not, I can't say, but it has had positive benefits on my health, particularly in regard to back pain.

So, could someone please tell me if Central Reverse Polarity is merely a gimmick name or is actually something real and tangible, and if so, how it works.

Thanks