And, at the end of the treatment, she was cured

And, at the end of the treatment, she was cured. Who'd have thunk it?
: Mary Poppins' Practically Perfect Piercing

I don't think it's exclusively the mysterious power of placebo, but I believe just doing something can be very therapeutic.

Doctors, like teachers, often gladly take credit for that which happens naturally under their supervision, and often more despite their help than because of it.