Fitness Integrative Training for Pediatric Rheumatology Disorders

Inclusion Criteria: * Pediatric rheumatic diseases (PRD) or joint hypermobility (JH) diagnosed by a pediatric rheumatologist or pain physician. * Initial diagnosis ≥ 3 months ago * Ages 10-19 years, inclusive * Ongoing symptoms of musculoskeletal pain and/or fatigue for at least 3 months * Functional Disability Index (FDI) Score ≥ 13 indicating at least moderate disability. * Child has written and spoken proficiency in English and parent has written and spoken proficiency in English or Spanish (will have a certified bilingual provider or interpreter available) Exclusion Criteria: * Untreated major psychiatric diagnoses (e.g., major depression, bipolar disorder, psychoses) or documented developmental delay. * Any other medical condition determined by their physician to be a contraindication for exercise. * Childhood Myositis Assessment Scale (CMAS) ≤ 30