This disclosure relates to improved massage chairs that include air cell apparatuses. A massage chair can include at least one air cell apparatus, which can be integrated into a shoulder portion, leg rest portion, arm portion, and/or other portion of the massage chair. An inflatable air bladder can be connected to each air cell apparatus. Each air cell apparatus can transition between a retracted position and an extended position. The air cell bladder can be configured to inflate when the air cell apparatus is in the extended position, thereby securing an individual to the massage chair. Various assemblies can be used to transition the air cell apparatus between the retracted and extended positions. Other embodiments are disclosed.