A new study published in the online version of the Journal of the American Medical Association recommends women should work out 60 minutes per day, seven days a week, in order to maintain a normal weight over their lifetime. In a WTTW Chicago Tonight panel discussion moderated by Carol Marin, Midwest Orthopaedics at Rush women's sports medicine physician Dr. Kathy Weber discusses the merits of the study and how women can achieve realistic exercise goals.