Since forever. The human body is very efficient. You have to run about 1 mile to burn 100 calories. Skipping a 1000 calorie lunch is the equivalent of running

Since forever. The human body is very efficient. You have to run about 1 mile to burn 100 calories. Skipping a 1000 calorie lunch is the equivalent of running 10 miles when it comes to weight loss. Put another way, without a diet change, you would have to run about 35 miles to lose just 1 pound of fat. Running is good for the heart and lungs. For weight loss, not so much.