The Bowel Movement Monitoring (BoMoMo) Study

Inclusion Criteria: * Age: 18-60 years. * Healthy as determined from self-reported medical history or when no relevant medical condition exists. * Stool frequency of 3 to 21 times per week. * Able to attend a session in person at City Campus or Headingley Campus, Leeds Beckett University, or City Campus, Sheffield Hallam University. * For women: Use of contraceptive methods or not planning to become pregnant for the duration of the study. * Able to understand and be willing to sign the informed consent form, and to follow all the study procedures and requirements. Exclusion Criteria: * Food allergy or intolerance * Currently dieting to lose weight * For women: Pregnancy, lactation * Bowel disease * Use of medicine causing constipation * Abnormal gastro-intestinal (gut) function or structure such as malformation, angiodysplasia or active peptic ulcer * History of gastro-intestinal surgery with permanent effect (e.g., surgical treatment of obesity) * Active inflammatory bowel disease, coeliac disease, chronic pancreatitis, or other disorder potentially causing malabsorption * Currently experiencing or been diagnosed with gastro-intestinal symptoms (e.g., abdominal pain/cramps, heartburn, stomach acid/reflux, nausea, vomiting, abdominal rumbling, bloating, belching, excess gas/wind) * Active constipation (i.e., currently constipated). * Active Irritable Bowel Syndrome * Currently experiencing disordered eating * Current use of laxatives * Current use or within the previous 3 months use of prescription or over-the-counter medication that has the potential of affecting gut bacteria including food supplements (specific medications will be assessed on an individual basis). * Use of antibiotics or pain medication containing opiates or morphine currently or within the previous 3 months. * Use of opioid drugs of abuse (e.g., heroin, fentanyl) currently or within the previous 3 months. * Consumption of more than 21 units of alcohol per week (men)/ more than 14 unit of alcohol per week (women). * Malignancy/cancer which is currently active or in remission for less than 2 years after treatment. * Currently experiencing a psychiatric disorder or a condition related with your mental health that impacts on your daily life (e.g., major depression, bipolar disorders). * Currently engaging in intense physical activity more than 3 times per week (assessed on an individual basis). * Presenting a psychological or linguistic incapability to sign the informed consent/ Investigator considers the subject unlikely to comply with study procedures, restrictions, and requirements. * Parallel participation in another research project which involves dietary intervention/other clinical trial.