This is exactly what was said:
I use to do that all the time when I had my 14ft Burm. I use to toss the rabbit to her and she would sometimes catch it in mid air. Also I would play tug of war with her and the rabbit.
Chuck- I believe we want these animals to know the food they are fed is already dead so the snake won't go for something alive( a person ) There is also better ways to give your snake exercise than shaking a prey item that is in its mouth. By simpley letting the snake come out of its cage and be handled and move around on its own is plenty of exercise. Also keeping a snakes instincts up to par, myself, would not consider this a good thing.