Gestational Weight and Incentive Research Study

"Lottery for daily self-weighing.~Incentives for gaining weight within a recommended (by Institute of Medicine) on a monthly basis."

"Lottery for daily self-weighing.~Incentives for gaining weight within a recommended (by Institute of Medicine) by the end of the study.~Incentives for meeting an exercise goal of 150 minutes of moderate physical activity per week, as recommended by the American College of Obstetricians and Gynecologists."

"Lottery for daily self-weighing.~Incentives for gaining weight within a recommended (by Institute of Medicine) by the end of the study."

"Certain loss for not engaging in daily self-weighing.~Incentives for gaining weight within a recommended (by Institute of Medicine) by the end of the study."

"Certain loss for not engaging in daily self-weighing.~Incentives for gaining weight within a recommended (by Institute of Medicine) by the end of the study.~Incentives for meeting an exercise goal of 150 minutes of moderate physical activity per week, as recommended by the American College of Obstetricians and Gynecologists."

"Lottery for daily self-weighing.~Incentives for gaining weight within a recommended (by Institute of Medicine) on a monthly basis.~Incentives for meeting an exercise goal of 150 minutes of moderate physical activity per week, as recommended by the American College of Obstetricians and Gynecologists."

"Certain loss for not engaging in daily self-weighing.~Incentives for gaining weight within a recommended (by Institute of Medicine) on a monthly basis."

"Certain loss for not engaging in daily self-weighing.~Incentives for gaining weight within a recommended (by Institute of Medicine) on a monthly basis.~Incentives for meeting an exercise goal of 150 minutes of moderate physical activity per week, as recommended by the American College of Obstetricians and Gynecologists."