Clinical Research Directory

Inclusion Criteria: * Age 18-32 yr * Healthy (self-reported) and not on chronic medication * BMI 18-27 kg/m2 (and waist circumference \<102 cm), and weight stable (less than 5% body weight change in the past 6 months) * Non-smoker and non-nicotine user * Regular sleep-wake pattern, with sleep duration of 7-9.25 hrs per night * Regular exercise habits the last 2 months * Regular daily meal pattern with 3 main meals Exclusion Criteria: * Major or chronic illness, e.g. diabetes, renal disease or inflammatory bowel disease * Current or history of endocrine or metabolic disorders * Psychiatric or neurological disorders (e.g. bipolar disorder, epilepsy) * Frequent gastrointestinal symptoms * Chronic medication * Any sleep disorder (including recent or chronic symptoms of insomnia) * Shift work in the preceding three months or for a long duration * Extreme chronotype or physical activity patterns * Time travel over two time zones in the preceding month * Too much weight gain or weight loss in the preceding 6 months (±5% body weight in past 6 months) * Any issues with or allergies against the provided food items * Recent major dietary changes or adoption of specific dietary regimens * Women who are pregnant, breastfeeding, or planning to become pregnant during the study period. * Use of illicit drugs or substances of abuse