The benefits from exercise are not about the direct energy expenditure, they're about adjustments to your body's metabolism. When we have like a cedentary life, when we're just sort of sitting in our chair all day, Like, all those effects get like they're in the wrong direction. If you run a ten minute mile, you'll burn a hundred 14 calory,. So one mile, we'll burn a 100 calories. It's not that bad.