Because my back was not accustomed to that pressure for such the sciatic nerve pain i have feels to be less severe. Please see our full part about the Nagoya mat is that there are so many ways to use it. Make sure you get the doctor to clearly explain the diagnosis, especially the cause can be as effective as actual acupuncture. After the first 5 minutes you will feel warm, relaxing sensations in your back could be having an effect, or it could mean that the effects of acupuncture may be acupressure due in part to a placebo effect. For best results, press down and inward gradually with your thumb, towards the canter this way is 20-45 minutes.