Food and Circadian Timing

Inclusion Criteria:

* Healthy, lean men and women

Exclusion Criteria:

* Major dietary restrictions (such as entirely dairy-free and/or meat-free diets)
* A body mass index (BMI) of 18.5\< \[BMI\] \< 24.9 kg/m\^2 and a waist circumference \<94/80cm
* Currently psychiatrically/psychologically unsuitable for participation
* Drug/alcohol use, including smoking
* Medication/drug use, including prescribed and over-the-counter medications
* History of working irregular day and night hours, regular night work, or rotating shift work for the 1 year prior to the study.
* Traveled across more than 1 time zone during the 3 months prior to the study
* Currently consuming a habitual high-fat diet
* Chronobiologic and sleep disorders
* Diseases of the Cardiovascular System
* Metabolic Syndrome; Two or more of these factors will be excluded from the study:

  1. HDL cholesterol of less than 40 mg/dL in men or less than 50 mg/dL in women;
  2. systolic blood pressure\>135 mmHg or diastolic blood pressure\>85 mmHg;
  3. Fasting blood glucose ≥ 100 mg/dL;
  4. Triglycerides ≥ 150 mg/dL.
* Pre-Diabetes/Diabetes
* Hypertension
* Disorders of the Respiratory System
* Disorders of the Kidney and Urinary Tract
* Infectious Diseases
* Disorders of the Gastrointestinal System
* Disorders of the Immune System
* Disorders of the Hematopoietic System
* Neoplastic Diseases
* Endocrine and Metabolic Diseases
* Neurologic Disorders
* Subjects must not be currently participating in another research study that would influence their safe participation in our study