Inclusion Criteria:  aged 18 to 70 years EDSS ranging from 1 to 7.5. pwMS with who are on a western diet stabilized medical therapy and clinical conditions pwMS with a motor control of upper limbs sufficient to maneuver a tiller  Exclusion Criteria:  Heavy smoking, alcohol and drugs abuse severe cognitive impairment dysphagia and/or comorbidities requiring protected environments and specific medical assistance blindness and severe visual disturbances (included severe nystagmus)