Inclusion Criteria:  Dutch speaking participants (age between 18 and 65 years) Healthy volunteers who have no pain complaints  Exclusion Criteria:  Not speaking Dutch A history of serious health issues (e.g. cancer, stroke, epilepsy, diabetes, depression, etc...) History of pain complaints or current pain (e.g. people who suffer from severe migraine, low back pain, neck pain, frozen shoulder, meniscectomy,...) Cognitive, arithmetic or attention disorders Pregnancy or breastfeeding in the past year