I meditate inside a copper pyramid at home. I have read documentation on pyramid vortex energy, and can tell you from my own experience that when putting fruit inside it, it lasted much longer than the fruit outside of it. Pyr-amid means ‘fire in the middle’. The pyramid shape causes a vortex of energy to flow up from the center. They generate energy. I can send you links to books & documentation if you’d like.

I am also very interested in this.