Even though running is physically straining, it's mentally refreshing. Especially when you feel like you've accomplished something.

You can provide a short-format content, and it can grow, and it can spread virally across the entire Twitter system, and it can contain within it a link to something that's much longer, that's a long essay or that's a video.

I think it's a really big deal to be able to meet people outside the context of something like a conference room or someplace where everything feels like it's formal talk.

I thought about tennis. But the more I thought about the whole thing - lessons, equipment, going to the courts - I said screw it, I'm just going to go buy a pair of sneakers and go running.

Right when I finish a workout, I feel pretty sexy. Even though I'm sweaty and I don't smell like a rose, I feel strong. It does a lot for me mentally and physically.

A personal belief is that if you're not personally invested in what you're working on, you'll fail.