It's worthwhile walking after a meal to reduce blood sugar levels. Insulin is primarily a storage hormone and the pancreas produces it to lower blood sugar which it does by storing it as fat. Not all calories have the same impact on fat production.

Glucose is stored as glycogen in muscle so full body resistance workouts are a good way of stabilising it and preventing spikes.

Dr. Robert Lustig is a good advocate of the insulin model over the calorie one.