Exercise to Restore 24h Rhythms in Metabolism

Inclusion Criteria: * Caucasian * Healthy (as determined by dependent physician) * Overweight: BMI 25 - 35 kg/m2 * Prediabetic based on one or a combination of the following criteria: * Impaired Glucose Tolerance (IGT): plasma glucose values ≥ 7.8 mmol/l and ≤ 11.1 mmol/l 120 minutes after glucose drink consumption during OGTT in screening. * Impaired Fasting Glucose (IFG): Fasting plasma glucose ≥ 6.1 mmol/l and ≤ 6.9 mmol/l. * Insulin Resistance: glucose clearance rate ≤ 360ml/kg/min, as determined using the OGIS120 model. * HbA1c of 5.7-6.4%. * Regular sleeping time (normally 7 - 9h daily) * Stable dietary habits: no weight gain or loss \> 3kg in the last three months. Exclusion Criteria: * Use of anticoagulants * Previously diagnosed with type 2 diabetes * Current alcohol consumption \> 20 grams alcohol/day * Extreme early bird or extreme night person (score ≤ 30 or ≥ 70 on MEQ-SA questionnaire) * Heavily varying sleep-wake rhythm * Nightshift work during last 3 months * Travel across \> 1 time zone in the last 3 months * Significant food allergies/intolerance (seriously hampering study meals) * Using \> 400mg caffeine daily (more than 4 coffee or energy drink) * Smoking