In {TAIL ~ another embodiment}, {HEAD ~ the seat} includes a seat hingeably supported on a base such that, in one version, the seat moves forward to provide additional support when the user sits down 
In { TAIL ~ another embodiment } , { HEAD ~ the seat } includes a seat hingeably supported on a base such that , in one version , the seat moves forward to provide additional support when the user sits down
REL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH