HeartMath is both a tool and a technique. It measures a person's current stress level and shows the results on a laptop of smartphone. It is a powerfull technique to monitor stress levels based on your heart rhythm biofeedback. Real life presentation of your stress level makes this tool of great value.
Gert found out how to use your own bio signals to reduces stress. He got overexcited and got certified as a HeartMath Coach and HeartMath Group Trainer.