Some step to feels sensation in Vipassana meditation:
Anything that one feels at the physical level is a sensation—any natural, normal, ordinary bodily sensation, whether pleasant or unpleasant, whether gross or subtle, whether intense or feeble.
Never ignore a sensation on the grounds that it is caused by atmospheric conditions, or by sitting for long
hours, or by an old disease.
Whatever the reason, the fact is that you feel a sensation.
Previously you tried to push out the unpleasant sensations, to pull in the pleasant ones.
Now you simply observe objectively, without identifying with the sensations.
It is a choiceless observation.
Never try to select sensations; instead, accept whatever arises naturally.
If you start looking for something in particular, something extraordinary, you will create difficulties for yourself, and will not be able to progress on the path.
The technique is not to experience something special, but rather to remain equanimous in the face of any sensation.
In the past you had similar sensations in your body, but you were not aware of them consciously, and you reacted to them.
Now you are learning to be aware and not to react, to feel whatever is happening at the physical level and to maintain equanimity.
If you work in this way, gradually the entire law of nature will become clear to you.
This is what Dhamma means: nature, law, truth.
To understand truth at the experiential level, one must investigate it within the framework of the body.
This is a reason how Siddhartha Gautama did to become a Buddha