Hello

I was reading through this forum and a member of this forum said something along the lines that when you meditate in a lucid dream, any sort of meditation that for every second you meditate in a lucid dreams it is like you are meditating for 10,000 years because a dream character came to him and told him that.

I am currently a practicioner in Reiki Tummo, and at level 3A right now.
This September I am taking a workshop where they wil give me an attunement which is activate my pineal gland and allow me to meditate very easily as if I had 10 years of meditation experience given in just a day.

So if I meditate in lucid dreams after this workshop, will it be so effective? What would be the effects on me if I meditate and what type of meditation is safe that I can do in a lucid dream? Is it dangerous at all?