Ketone Administration During Inactivity and Retraining

Inclusion Criteria: * Recreational sports participation, including general fitness training, between 2 and 5 hours max per week * Good health status confirmed by a medical screening * Body mass index between 18 and 25 Exclusion Criteria: * Any kind of injury/pathology that is a contra-indication to perform resistance exercise * Intake of any medication or nutritional supplement that could impact muscle protein synthesis during the period of the study * Intake of any whey protein, casein or branched-chain amino acid supplement or anti-inflammatory drug from 1 month prior to the start of the study * Blood donation within 3 months prior to the start of the study * Smoking * Pregnant * More than 3 alcoholic beverages per day * Current participation in another research trial * Any other argument to believe that the subject is unlikely to successfully complete the full study protocol * Adherence to a high-fat, low-carbohydrate ketogenic diet (less than 20% of energy intake derived from carbohydrates) * (Cow's) milk protein allergy