Here I'm doing tire flips (left) and ins and outs (right). Both incorporate your legs, but the tire flips end up being an all around body work out.
Yes, I am holding a sledge hammer. These work your arms pretty dang good. You move from a side stance with some slack on the sledge hammer, to pushing yourself forward, with the sledge hammer hitting the tire. Great for those who want more definition, clearly something I'm after with my scrawny little arms.
If you want your legs to burn, these are for you. Strap a harness on and put as much weight on the tire as you can pull, and back peddle. You want your hips to be low with BIG steps back. Great for the glutes and hamstrings.
I also did ball throws, push ups and abs.