Meditation is mainly for the searcher of real information. There is an entire science behind it, predicated on teachings from thousands of years ago. The spiritual benefits are way too numerous to list and rely on the sincerity, orientation, and persistence for the spiritual searcher.

If done correctly, meditation energizes your awareness, bringing peace and wisdom, expanding your ability to love unconditionally, and prepares the soul for deep spiritual communion with God, the main one without a Second.

Many siddhas (psychic or spiritual powers) are natural fringe advantages of meditation.

Dhyana may be the Sanskrit word for meditation. Nonetheless, it has a narrower meaning. Dhyana is when the concentration is concentrated about the same point.

Reference
Benefits of Meditation | Swami Kenananda. http://swamikena.org/benefits-of-meditation/