Tire = Free
Sledgehammer = $10.00
Work Out Area = backyard = Free
The following three links are good video’s to watch. The first one is a youtube video showing some sledgehammer exercises. The second one is a great article done by Mark Sisson over at Mark’s Daily Apple. There is a lot of information in there, including proper form. The third link isn’t a workout I’ve done personally, but it shows a back yard workout that includes a lot of exercises using the tire.
I haven’t done this entire workout personally, but the following video has different backyard exercises using a tire.