Inclusion Criteria:  Low physical activity levels: determined with the question "How much of your leisure time have you been physically active in the last year?" Diagnosis of intellectual disability (mild, moderate, severe, or profound) Aged 16-60 years old Ability to participate in the intervention Ability to walk with or without support Able to provide written informed consent or written informed consent can be obtained from a representative  Exclusion Criteria:  Medical contraindications for participation in programs with increased exercise, as advised by the primary care or ID specialist physician High level of physical activity Inability to provide written informed consent and written informed consent cannot be obtained from a representative