While they’re probably not cut out for that Zumba routine, one Chicago-area organization is encouraging people to take their dogs along for a workout. The K9 Fit Club offers classes in two locations for people and their pups. Founder Tricia Montgomery started the business in 2012 after losing 130 pounds while exercising with her dog Montgomery. Classes include a 6-week running club, boot camp and, of course, Pupilates. A growing online community offers tips, support, and an endless Twitter feed at K9FitClub.com. Is doggie-sized Spandex next?