The claimed invention relates to a foot support system, comprising: a foot support bladder; a fluid container; a fluid supply; a first solenoid including a first port and a second port and switchable between an open configuration and a closed configuration; a second solenoid including a first port and a second port and switchable between an open configuration and a closed configuration; a third solenoid including a first port and a second port and switchable between an open configuration and a closed configuration; a fluid line in fluid communication with the fluid supply and with the first port of each of the first solenoid, the second solenoid, and the third solenoid; and a manifold having: (a) a first manifold port in fluid communication with the second port of the first solenoid and with an external environment, (b) a second manifold port in fluid communication with the second port of the second solenoid and with the foot support bladder, and (c) a third manifold port in fluid communication with the second port of the third solenoid and with the fluid container, wherein the first solenoid, the second solenoid, and the third solenoid are independently switchable between their open configuration and their closed configuration to selectively place the foot support system in a plurality of operational states.