Deep Meditation Benefits 

There are many benefits to deep meditation when done for many years, besides the typical stress reliever when we perform light meditation, there are those such as our increase in our body frequency and organs frequencies.
Here are some of those benefits.

Hearing range
When we meditate, our range increases generally for higher frequencies, sometimes it's called the spiritual ear awakens.
Humans typically can hear frequencies from 20 Hz to 20 kHz. Dogs can hear frequencies approximately from 40 Hz to 60 kHz, higher than of humans, the dogs whistles uses that range without us hearing it.
When our hearing range increases, it helps for receiving messages sent using telepathy.

Vision range
The average human eye can detect frequencies between 20 and 60 Hz. It's estimated that The Human Eye Can Only See 0.0035% of Reality.
There are many individuals that are able to see a higher range such as people that have just die (called ghosts) or people that are sleeping and visiting us in the astral using their next body of higher frequencies (out of 7), the astral body. The human vision when is awake after many years meditating is called the third eye or the spiritual vision.

Body vibrates higher
The human body typically resonates at a frequency range of 62-78 MHz. Our whole body vibrates higher when we are in a meditation state and also off it after practicing for a long time. It helps too when we only eat plant based foods since meats are the most dense of frequencies and plants of a higher one. Nature respects us when we don't kill/eat animals and when we approach animals they feel comfortable with us.

Chakras alignment 
When we concentrate on aligning and harmonizing our chakras, all of our body organs perform better since each of the chakras distribute energy to different parts of our body and we are able to better help others when sending healing energy or energy to help to change events.

Higher Self connection 
We can connect to our higher self and find out what we came to do on this life, the lessons and errors we made in past lives and the probabilities of the future.

These benefits allow us to perceive an extended range of realities that have always existed around us. They also tend to extend our years of living in peace and in harmony with us, our environment and with others, specially if we do it with love.

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Matthew 13:9-15

9 Then Jesus said, “Whoever has ears to hear, let them hear.”

10 When he was alone, the Twelve and the others around him asked him about the parables. 11 He told them, “The secret of the kingdom of God has been given to you. But to those on the outside everything is said in parables 12 so that,

“ ‘they may be ever seeing but never perceiving,
and ever hearing but never understanding;
otherwise they might turn and be forgiven!’ ”