When we have been practicing the 3 factors for quite some time, one starts to feel spontaneous releases of bliss within themselves, for example, exactly how it is explained in the 6 yogas of Naropa. Along the spine in the endocrine system or the chakras. It tends to increase when you concentrate & relax one at a time each centre starting from the root then upwards. Once it reaches the throat the bliss becomes pretty crippling as it floods the mind and all thoughts seem to cease. I understand that sensation is sensation and experiences come & go, but does this bliss come from the being inside, or is it the product & presence of the divine mother as one continues practicing and refining the Holy of Holies?