Biofeedback: Control Your Body & Emotions Using Thoughts
This is a picture of a biofeedback device that I use frequently. I have used it to increase my Heart Rate Variability by sixty to eighty percent over the past two years! HRV is an important measure of our ability to concentrate, and reflects our ability to self calm as well.
I plan to post more on biofeedback in the future. It's really valuable to obtain…

