The MMA gym I attend for BJJ. The owner was a wrestler in HS and college. There are a bunch of students (younger men than me) who have some background in wrestling (HS, college or both, some still in that) so he started a couple wrestling sessions a week for them. Also, some of the MMA guys wanted to learn a bit of wrestling to add to their skill set if they didn't have it already.
EDIT: Random plug, though this probably won't apply to anyone here: Rush MMA in downtown Macon, GA.
