Inclusion Criteria:  Men and women who are referred and eligible for either the outpatient cardiac rehabilitation program for coronary artery disease willing to accept random assignment and complete the study assessments Equal numbers of men and women will be recruited  Exclusion Criteria:  Inability to complete the consent form and communicate in English Self-reported history of an eating disorder Current or recent (1 year) pregnancy or breast feeding Body mass index <18.5 kg/m^2 or clinical signs of cachexia Contraindications or inability to perform cardiopulmonary exercise testing Type 1 diabetes Type 2 diabetes that requires exogenous insulin Working night or rotating shifts Eating window <12 hours or consistently eating less than 3 meals/day in the past 3 months