Ergonomic tool

A tool comprising:

• (a) a handle;
• (b) a head;
• and
• (c) a flexible shaft comprising a plurality of flexible shaft members each connecting the handle with the head, wherein:
• the plurality of flexible shaft members comprises at least one fixed shaft member and at least one floating shaft member, each made with resilient material,
• each of the at least one fixed shaft member is fixedly connected with both the handle and the head, and
• each of the at least one floating shaft member having a first end that is fixedly connected with one of the handle and the head, and a second end that is reciprocably connected with the other of the one of the handle and the head, with the second end of the at least one floating shaft member disposed part way in an opening that extends longitudinally through the one of the handle and the head to permit the at least one floating shaft member to translate reciprocably forward and backward within the opening as the flexible shaft, when under a tool swinging force during swinging of the tool, flexes in a tool swinging plane from an original, unbent position, to a bent position, and the resilient material of the flexible shaft is structured to spring the flexible shaft back to the original, unbent position in the absence of the tool swinging force.