Some people work on puzzles to distract them, some like mysteries.... I find this to be a good distraction and quite useful even if I dont understand everything. It sounds like you position your hands in an exact way. Has to be exact for it to work.

The energy waves are real. We're surrounded by electronic devices that all emit frequencies that can go through walls so you know it can go through you. Harmless? Depends how sensitive you are.

I just like to keep an open mind about things. Qigong is a serious art form. It includes thousands of medical treatments.