Congenital Heart Disease Physical Activity Lifestyle Study V.2

A physical activity monitor (Fitbit) will be provided to participants in both arms.

Participants in both arms will receive the results of their exercise stress test, which includes information on the duration, frequency, and intensity of their physical activity.

Participants in both arms will receive information on healthy living, including topics such as physical activity, sleep, stress management, and diet.

Participants randomized to the CHD-PAL arm will receive coaching to: 1) change attitudes towards physical activity; 2) increase perceptions of other people's approval of physical activity; 3) increase perceptions of control over being physically active. These elements will be delivered using a non-judgmental stance and will be accompanied by goal-setting.