Pursuing thrills across Australia taught me a trick for improving focus before a bungee jump, chickensshoots.com. It goes beyond mental grit. I use the Chicken Shoot Game as a playful, high-speed warm-up for my brain. It puts me in that particular zone of alert calm the supreme leap demands.Down Under Thrill CultureThis continent is built for adventure. Rugged outback and breathtaking coastlines shape a...