Part of the addition was an extra space adjacent to the den that we had no purpose for until now. It was a general storage area, but we're trying to move all the rarely used stuff into the attic. So we turned the space into an exercise room! Step 1 was lighting, so Chris had to wire in a switch, a socket, and a light source.
Step 2 was flooring - we got this really cool rubbery foam stuff that fit together like a puzzle.
Now all Chris needs is a punching bag!