Inclusion Criteria:  Healthy volunteer, male or female, between 18 and 61 years old Body mass index > 18,5 kg/m2 and ≤ 25 kg/m2 Able to provide informed consent to research participation Registered in the French social security system  Exclusion Criteria:  Subject using a sit-to-stand office desk or a swiss ball Contact jobs (face-to-face with people) Pregnant or breastfeeding women Medical or surgical history determined by principal investigator to be not compatible with the study Subject with cardiorespiratory and/or osteo-articular disorders limiting their ability to perform physical tests or the use of active offices Subject with type 1 or type 2 diabetes treated with insulin Subject with progressive cardiovascular or neoplastic disease. Subject with a major infection within 3 months of inclusion. Subject with known neuromuscular pathology: myopathy, myasthenia, rhabdomyolysis, paraplegia, hemiplegia Subject with chronic or acute inflammatory pathology 3 months prior to inclusion