When price is bouncing off an EMA many times like in that case, you can have extremely tight stops, which makes great risk/reward. It was probably also bouncing off a resistance line. Anyway, I'm liking the 4 hour chart lately. Of course, a few years ago, it might have been another time period that worked better. But I know a guy who makes a living exclusively on the 1 hour chart and has been doing it for years.