Abstract: A chair to minimize muscle strain as a person sits in or rises providing an identical pair of elongated parallelepiped back frames having a vertically extending upper portion, a rearwardly extending lower portion with a parallelepiped connection member extending perpendicularly therebetween to connect the back frames. A parallelepiped crossbar extends between a pair of front legs. A spring assembly having a parallelepiped upper mount member, a parallelepiped lower mount member, and a single coil spring therebetween is secured to the lower edge of the back frame lower portion. The selective placement of a user's weight upon the seat positions the spring into either a compressed state, wherein the seat is parallel to a floor surface, or an uncompressed state, wherein the seat is at an angle to the floor surface.