Dynamic furniture for supporting a seated or reclining user includes a base, an actuator assembly supported by the base, a front boom in circular orbital connection to a portion of the base, a rear boom in circular orbital connection to another portion of the base, a seat platform supported by the actuator assembly, and a back platform supported by the actuator assembly. The seat platform and the back platform are capable of remaining stationary relative to the actuator assembly while the actuator assembly moves relative to the base. The seat platform and the back platform are also capable of moving relative to the actuator assembly while the actuator assembly remains stationary relative to the base. The seat platform and the back platform are also capable of moving relative to the actuator assembly while the actuator assembly moves relative to the base.
