Most of the people saying mentally probably aren't, of course with exceptions. Everyone feels they are more intelligent than the next guy. It's seeing past that, you start to see your mistakes and then you really can call yourself more intelligent.
But for me, I would say both.
I have an inventive, creative mind and I love to design, build, and create. I can sit in a chair on a creative binge for many many many hours so long as I'm enjoying what I'm doing and I'm creating something to show for it. I am incredibly picky on details, and my work almost always consists of slowly building up from the fine details - never in broad strokes. Trying to detach my perspective, I would think I'm above average when it comes to intelligence in some areas and some ways. Definitely not in a broad sense though.
Physically I take care of myself. I go to the gym 3 times a week, and I'm active in a few martial arts and sports. I make an effort to eat healthy albeit sometimes I kinda don't.
Poll