Extremely easy to use and very worthwhile. This is a self-care Heart Rate Variablity (HRV) monitor package (software & portable device – the portable device can be used stand-alone without software and computer). Use to train yourself to regulate the balance between your sympathetic (stimulating) and parasympathetic (calming) nervous system, for improving and maintaining short … Continue reading emWave home/portable biofeedback ‘training’ system