What should I focus on first?

So, I won't say that I'm new to drawing or anything like that. I've been doing it my whole life. But I've never really focused on real life drawing, gestural drawing and the likes. So, my question is: Should I focus on getting the anatomy down before I start with gestural drawing and real life drawing, or the other way around?

You don't focus on the anatomy with gestural drawing. It's just the flow of lines, balance and the sorts. I'm just unsure on what to improve at first.

Start with 30 second gestures as a warmup. Practice anatomy with longer poses (5+ minutes). :)