Great post from a great web site.
Bottom line – exercising at low intensity burns a higher PERCENTAGE of fat as opposed to other fuels. But you’ll burn more TOTAL fat if you exercise closer to your maximum age-adjusted heart rate. Your target heart rate range decreases with age.
…if you can jog rather than walk, your workout can be half the duration to expend the same amount of calories.
I actually walk, because my joints and neck can’t stand the pounding of running. I put the treadmill at an elevation (currently 7.5%; I worked up a little at a time) in order to get my HR (heart rate) up top the 150 range.
If you’re just starting out, walking is great exercise; human beings are designed to walk long distances. Click the link for a great introduction. Try walking 30 min/day; even better if you can do it with a buddy, or your kids. Aim for HR 115 or so if you’re just starting out; Rome was not built in a day!
If you have diabetes, high blood pressure, or heart disease, see your doctor before starting an exercise program.