In my ignorant young age, I experimented with methamphetamemes. Or meth for short. There was one stage to where I was awake for so long that my subconscious just totally disconnected and I was 100% fluent. Without even trying. This had to be over 5 or 6 days. It was something I never experienced as in speaking. I extremely advise you not to do this. But there is some kind of connection.