[Gem]

As the mind become more sensitive in its perception through meditation practice you are able to feel the subtler aspects of the body sensation, which people often describe as tingles. We can imagine it is 'energy' and so forth, but you can tell that is what you imagine about it. the real-lived experience, as you experience it, is 'what it is'. Be in touch with it 'as it is', and take care not to become distracted by fanciful speculation.