So does a video game called Tenacity, developed by a design group and neuroscientists. The game offers a leisurely journey through any of half a dozen scenes, from a barren desert to a fantasy staircase spiraling heavenward. At the beginner’s level you tap an iPad screen with one finger every time you exhale; the challenge is to tap two fingers with every fifth breath. As you move to higher levels, you’re presented with more distractions—a helicopter flies into view, a plane does a flip, a flock of birds suddenly scuds by.
