"The NBER Bulletin on Aging and Health provides summaries of publications like this. You can sign up to receive the NBER Bulletin on Aging and Health by email. Sedentary lifestyles, obesity, and obesity-related chronic diseases have become increasingly common among U.S. adults, posing a major...

We consider the welfare consequences of nudges to encourage exercise habit formation. We analyze a randomized trial of nudged exercise commitment contracts using a time-inconsistent intertemporal utility maximization model of the demand for exercise. Our empirical analysis shows that people who...