You probably have the makings of an awesome Halloween costume already and don't even know it. We scoured the web to present you with some of the best fitness inspired costumes out there and added our own suggestions. Most of these ideas have elements to them that any fitness fanatic probably has in their dresser or closet already. Check them out in the gallery.
If you have vampire fever like we do, vamp up any of these looks with fangs, fake blood, and pale makeup.
Source: Flickr User deleted.scenes