Researchers don't know how or why biofeedback works. The research is still in its experimental phase and it's unknown how it might work. These claims are mostly made by individuals. Headaches. Although slowing your breathing rate can help you reduce stress, it is not possible to control your breathing rate. Many people are turning towards alternative and complementary methods to improve their overall health and wellbeing. It was also where many unregistered devices were sold."
Healthvibed Spooky 2 Scalar