| Completed | N/A | 66 | RoW | Fasting/refeeding, FAST lean, FAST obese, Ketogenic diet/ fasting, KETO obese | Charles University, Czech Republic, Faculty Hospital Kralovske Vinohrady, Institut National de la Santé Et de la Recherche Médicale, France | Insulin Resistance, Obesity | 03/22 | 03/22 | | |