Behavioral intervention. Women with excessive weight gain in pregnancy will be recruited in their 3rd trimester. They will begin with a 5 week group session on weight management. After they deliver the baby, they will begin receiving text messages supporting behavior change they learned in their 3rd trimester. They will follow up at 6 weeks postpartum and 4 months postpartum.

Women will receive usual prenatal care from their OB. Postpartum, they will receive a monthly newsletter relevant to the new mother on her nutrition and physical activity. They will be followed at 6 weeks postpartum and 4 months postpartum.

Behavioral intervention will include a group class for women in their 3rd trimester followed by a mobile texting program to support behavior change postpartum.

A mobile Health intervention tailored for the 30 postpartum mother and grounded in behavioral change theory will be associated with significantly more reduction in BMI than 30 women not enrolled in the intervention.

(1) Examine changes in cardiovascular health metrics (fasting glucose, fasting insulin, and BP) and markers of inflammation (hs-CRP) verses control group (2) We will evaluate changes in perceived nutrition, physical activity, and weight-loss self-efficacy; self-efficacy has been shown to be a direct predictor of behavior (3) measure the effects of breastfeeding support on the length of time a mother breastfeeds verse the control group.