Does Massage Work?

I use PolarRS800 and It’s a great device, I use It for my interpretation of HRV analysis with an external software and not using Polar proper features.
I like raw data and not a watch tell me what’s happen into the body.
If you use it in that way and have results, It’s good for you, but in my opinion at professional level, you have to do another step.
I use RS800 from about 3 years.

Then, on the concept of “Training do nothing”, the problem are the points of view, yours are different from mine, peace.

On cut and copy informations, our work is first at all practical, theory is on the book, on internet, in the mind of armchair expert as Dan, we have just provided to give you some reference.
Do specific question and me or pakewi will try to give you an answer.