Biofeedback teaches a person how to change and control unconscious processes in his/her body through the use of simple electronic devices.

Biofeedback is a useful tool in learning to reduce stress, decrease anxiety, relieve pain, condition injured muscles, increase attention, and control medical conditions, such as blood pressure, asthma, and Raynaud’s disease.

HeartMath

In today’s world, it’s important for people to learn stress reduction and emotional management skills. With the emWave PC Stress Relief System you can take an active role in preventing stress, managing the emotions associated with stress and create better health. HeartMath has revolutionized stress reduction by developing a proprietary, scientific process and award-winning technology that:

Helps you achieve “coherence,” a highly efficient psychological state where all the systems of the body are working together in harmony—leading to a feeling of well-being and control.
Improves your heart rhythm patterns which trigger a variety of positive outcomes in the mind and body, creating feelings of balance and empowerment allowing you to experience greater health and more energy.
Increases your heart rhythm coherence that drives synchronization of your body and brain. Gives you tools to manage your emotions and thoughts and follow through on changes you are inspired to make.
Leads you to reduced stress, improved mental function, better memory, clearer decision-making, better relationship communications, and improved physical health.

http://www.heartmath.com/