Meditation Follows Concentration - Part 8

During meditation you will get into rapture or ecstasy. It is of five kinds viz., the lesser thrill,
momentary rapture, flooding rapture, transporting rapture, and all-pervading rapture. The lesser thrill will raise the hairs of the body (like the goose-skin). The momentary rapture is like the productions of lightning moment by moment. Like waves breaking on the seashore, the flooding rapture descends rapidly on the body and breaks. Transporting rapture is strong and lifts the body up to the extent of launching it into the air. When the all-pervading rapture arises, the whole body is completely surcharged and blown like a full bladder. “Whatever he (the Yogic practitioner) sees with his eyes, let him consider as Atman. Whatever he hears with his ears, let him consider as Atman. Whatever he smells with his nose, let him consider as Atman. Whatever he tastes with his tongue, let him consider as Atman. Whatever the Yogi touches with his skin, let him consider as Atman. The Yogi should thus unwearied gratify his organs of sense for a period of one Yama (3 hours) every day with great effort. The various wonderful powers are attained by the Yogi, such as clairvoyance, clairaudience, ability to transport himself to great distances within a moment, great power of speech, ability to take any form, ability to become invisible, and the transmutation of iron into gold, when the former is smeared over with his excretion.” Yogatattva-Upanishad.
Just as a very skilful archer in shooting at a bird is aware of the way in which he takes his
steps, holds the bow, the bow-string, and the arrow at the time when he pierces the bird, thus
“standing in this position, holding thus the bow, thus the bow-string, and thus the arrow. I pierce the bird,” and ever afterwards would not fail to fulfil these conditions that he might pierce the bird, even so the aspirant should note the conditions such as suitable food, thus “eating this kind of food, following such a person, in such a dwelling in this mode, at this time, I attained to this meditation and Samadhi.”
From - SRI SWAMI SIVANANDA