Hey Adriano, welcome to Dreamviews

It sounds like you are a natural lucid dreamer, and I am pretty sure that it is normal for naturals to have LDs that frequently, although I am not one but I am sure a few will respond to this.

For everyone else who just learned about lucid dreaming and has to try to get them, well, we all wish we had them that frequently =P

So again welcome, and if you have any other questions, ask away!