Take a free, 45-minute exercise lesson on the Great Lawn in Millennium Park every Saturday.
Classes include yoga, Pilates,tai chi and Aerobic dance classes which feature varying styles including hip-hop, Latin, Polynesian and cheerleading.
Here was the schedule this week and I was there for Yoga, as were hundreds of other people who really loved the instructors.
Schedule:
7 a.m.: Tai Chi
8 a.m.: Yoga
9 a.m. Pilates
10 a.m.: Aerobic dance