Doing a lot of meditation and being exposed to too much high frequency light can cause problems.
It can strip the body of minerals and nutrition, which causes other problems.
It can cause sensitivity to the energies that are around about us in life, such as the atmosphere in places, or the feeling and the vibe of others. This over stimulation is unpleasant and inhibits involvement with life.
Too much light causes people to become ungrounded, and also out of their body. It’s not self loving, and it doesn’t serve others.
Sensible meditation practice is the way; balanced, with a grounding lifestyle and a good diet with grounding food. That’s a helpful spiritual path. Being spiritual means being balanced (well, when we aren’t learning from falling over).
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Spiritualgrowthadventure 
I would add the thought that perhaps one should examine their reason for meditating. Some practitioners use it as a means of escape from the world, to avoid responsibility, etc. I believe that approach is dangerous. I’ve benefited physically from meditation (lower stress, etc) and as I teach, after mediation it is important, as you stated, to ground yourself – just doing simple movements afterwards helps bring attention back to the body and your surroundings.
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