Inclusion Criteria:  BMI<30 No pain No musculoskeletal disorders No balance disorders No pathologies linked to the central nervous system No use of drugs affecting the balance  Exclusion Criteria:  People with foot pathology other than the arch; People with diabetes ; People with severe obesity ; People wearing high heel shoes regularly ; People with degenerative disease ; People with neuromuscular pathology ; People with a circulatory disorder ; People who have had major lower body surgery; Inability to walk 30 minutes continuously.