"Burn more fat when you walk and make bigger cardio gains"
- Walk and run in intervals. Alternate 2 minutes of moderately paced walking with 1 minute of fast walking or light jogging. You'll burn way more calories.
- Go for the grade. Walking uphill -- even an incline increase as small as a 10 percent grade -- can help you torch 30 percent more calories.
- Change the terrain. Stepping on a variety of surfaces will challenge the muscles of your body in new ways. It also keeps workouts interesting.
