4 Minutes: No-Workout Fitness

4 minutes a day. No workouts. You don't exercise, but you'd like to do something for your health? Then what you already do counts: taking the stairs briskly, hurrying for the bus, walking fast uphill. 4 Minutes spots these short, vigorous moments automatically and adds them up toward one simple daily goal: 4 minutes. No workouts. No training plans. Nothing to log. Just one number. — HOW IT WORKS — • Keep your iPhone in your pocket or wear your Apple Watch – that's it. • The app looks at steps, floors climbed and (with Apple Watch) heart rate, and finds the stretches where you really got moving. • Bursts from 30 seconds count. A few flights of stairs and a quick dash to the bus often cover the whole day. — TODAY — One ring, one number: "2:40 of 4 minutes". Below it, an encouraging line and a list of today's moments with time and duration – for example "Up the stairs, 0:50". — BURST…