- Report an uncontrolled medical condition that may pose a safety issue given the recommendations for diet and unsupervised physical activity in the current study (e.g., uncontrolled hypertension). The investigators will refer individuals who have blood pressure levels >140 / 90 mmHg as part of baseline screening to their physician and exclude them from this study unless their treating physician determines s/he is a suitable candidate based on the specifics of the protocol and provides written medical consent for participation. Participants who report a history of or current treatment for medical conditions (e.g., hypertension, diabetes) will be asked to obtain MD consent to participate.