Don’t let fingers win, says Yasmin Karachiwala in The Perfect 10: 10-Minute Workouts You Can Do Anywhere, a book with a mind boggling variety of workouts. She points out that with technology, we just use our fingers to press remotes, rather than get up and move. She’s got a point. We need to build fitness in our lives now, make it a routine, a habit, but fun rather than a chore.