Do you have bad knees already? If so I would definately stick with the elliptical but I do feel jogging is more challenging. Why? When you jog you have to keep a minimum speed up to not fall off the
treadmill on the ellipital you can speed up and slow down as you please. So you will keep a steady
heart rate and burn more
calories jogging. If you have enough self control to keep a fast steady pace on the elliptical then you will benefit from it but, most people can't do that. You also have to keep your arms moving you can't just hold onto the handles. Moving arms=more
calories burnt.
Oh and don't pay attention AT ALL to the amount of
calories the machines tell you, you are burning. The are all inaccurate. If you can input any information about yourself at all it's usually only age and weight. What about height? Obviously a 170 5'2 person is going to burn more
calories then a 6'2 170 person at the same speed.
