Eating like shit has also really impacted the way I look at the world and gave me a much deeper appreciation for everything good in my life. Nothing like deep burger regret to put into perspective what's important.
Oh yeah and I've become a pick-up artist. Not really intelligence, per se, but I did pay $9000 in seminars and it's been a wild ride of self-discovery. I love being humbled by how great some of my competitors are at it, and it relaxes me knowing that it's something I can improve on yet never really care about being exceptional at.
Finally, I spend a lot of time observing sociopaths. When you actually dig into the lives of the people so many of us look up to, there's a lot of things in their lives that are either undesirable, or not any more figured out than most of us have it. So it helps in a weird way to go to the apex predators of our species who engage without the burden of moral artifacts.