Helps with fitness, neck and jaw strength and power development
They're actually a really good tool. Certainly in Bulldogs a lot of people believe there aren't many curs... Just unfit dogs.
Being unfit will make some dogs give up when they're not hurt, just tired. Same in humans if you've ever fought?
It's another tool in your Arsenal; like hand walking, like carpet or slat mills, like a flirt pole, like the right diet etc