.
When using your treadmill, increase the
angle (incline) a bit. Every 1% grade increases the calories you
burn by 10%.
For Example:
A 150# person burns about 100 calories per mile walked (or ran).
At a 1% grade this increases to 110 calories per mile. 2% grade
= 120 calories, 3% grade = 130 calories, etc..
Just be careful and increase angles
gradually, it takes a few weeks to do this.