Hello everybody, did you ever read or use a half moon bench?

Here is what I read about it : The half moon bench has proven to be a great appartus for growth. By using this bench you will expand your thoracic
cage. It will develop your shoulders and make your spinal column more supple.
You can build this half moon bench to benefit from its ewfectiveness.

I want to know more about a half moon bench for growth.

Thanks, Egor