Move over Lululemon, the new Nike store in Lincoln Park also offers complimentary yoga classes! They've dedicated their entire 2nd floor as studio space for all sorts of cool fitness classes and it gets even better. If you can't catch Lulu's free yoga class on Sundays, no worries, NTC (Nike Training Center) offers complimentary fitness classes daily! Wow.
You of course must preregister to attend. No biggie right? Here's the link to their March schedule!