Inclusion Criteria:  Male or female 18 - 40 y BMI range 18.5 - 25 kg/m2 Recreational active (performing non-competitive physical endurance exercise at least two times per week with a minimum duration of 60 minutes per exercise bout)  Exclusion Criteria:  Smoking Performing regular resistance training (3+ times per week, carrying out progressive overload training) Subject following an overly imbalanced or restrictive diet as per nutritional advice Participants who received antibiotics in the 90 days prior to the start of the study Self-admitted lactose intolerance Administration of probiotic or prebiotic supplements in the 14 days prior to the study