Inclusion Criteria:  Aged 65-85 years Body mass index 18.5 - 30 kg/m2 Healthy Having given informed consent  Exclusion Criteria:  Allergy for one of the food items used >5% weight change in the previous 6 months Participating in a structured (progressive) exercise program Smoking Diagnosed musculoskeletal disorders Diagnosed metabolic disorders (e.g. diabetes) Use of any medications known to affect protein metabolism (i.e. corticosteroids, non-steroidal anti-inflammatories). Chronic use of gastric acid suppressing medication Chronic use of anti-coagulants Diagnosed GI tract disorders or diseases Blood donation in the past 2 months Strict vegetarian diet