Initial screening will occur in person or over the phone. Further screening at the data collection site with an advanced practice nurse will include blood work for glucose and lipoproteins, a history and physical, and resting EKG. At baseline, 24 and 48 weeks all women who are eligible will: be given questionnaires on physical activity, health and factors that influence their physical activity; have their height, weight, waist circumference measured; and do a two minute step test. All three treatment group will attend 5 group visits every 5 weeks during adoption (first 24 weeks) and 1 booster group visit during maintenance (week 36). The group visit consists of brief individual time with a staff member followed by a group visit with motivational videotapes. All treatment groups will self-monitor their physical activity with accelerometers and enter their step data into a voice response system.