I hired a red light pad a couple of years ago after having pneumonia. Sue recommended I use the pad on my chest. It was amazing!! The chest pain relieved and I could breath better within minutes. Needless to say I bought the pad!
It gets such a work out between myself, my old cat who has major hock damage – (she loves it), the dog with hip issues, and myself for all sorts of variety of body pain (joys of fibromyalgia) plus chest pain when I get really sick.