Biofeedback is a method of health care that allows one to learn to control their bodys functions, such as heart rate or muscle tension. Biofeedback machines connect user to electrical sensors that help them receive information about their body. This feedback assists them in focusing on making small, yet effective changes to the body. An example of this would be for muscle relaxation, which can help reduce pain in specific areas. The right biofeedback machine can provide the power to control your body naturally, helping to increase health, physical performance and emotional wellbeing. Greater awareness of physiological functions is key to overcoming chronic pain. Some of the processes that a biofeedback machine can provide information on are pain perception, heart rate, muscle tone, brainwaves and skin conductance. The goal is to be able to maintain these benefits without the use of equipment after a period of use.