From a weight less perspective, exercise is generally irrelevant. Your basal metabolism burns way more calories than any form of modest exercise. So what you eat affects your weight more than what you do. You can do an hour of light exercise and burn off a soda, or just don't drink that soda in the first place.

I say that because a lot of people give up on weight loss because they are unwilling or unable to exercise, and it makes such a small difference anyways.