Number of walks this week: 4
Time per workout: 25 to 40 minutes
This week, build your fitness base and burn more calories by taking more steps every time you walk. Up the ante everyday by adding an 5 extra minutes at a brisk pace (where you can speak fairly easily but are slightly breathless) and you'll burn an extra 21 to 28 calories every time you walk. If you start with a 25 minute walk on your first day, you should be up to a 40 minute walk by your final workout.