Exercise machine with electromagnetic resistance selection

An exercise machine comprising:

• a frame having at least one rail, a first end and a second end, wherein the at least one rail has a longitudinal axis;
• a carriage movably connected to the at least one rail, wherein the carriage is adapted to be movable along a portion of the at least one rail;
• a plurality of biasing members each having a first end connected to the frame and a second end;
• a plurality of first magnetic members, wherein each of the plurality of first magnetic members are connected to the second end of a corresponding biasing member of the plurality of biasing members;
• a plurality of second magnetic members connected to a mounting bracket affixed to the carriage, wherein each of the plurality of second magnetic members corresponds with one of the plurality of first magnetic members;
• wherein the plurality of first magnetic members are each aligned with the plurality of second magnetic members;
• wherein the carriage is movable between a first position and a second position, wherein when the carriage is in the first position the plurality of first magnetic members are positioned proximate the corresponding second magnetic members of the plurality of second magnetic members sufficient to allow for magnetic connection of corresponding magnetic members of the plurality of first magnetic members and the plurality of second magnetic members when actuated by the controller;
• a bracket connected to the frame, wherein the bracket is adapted to support the plurality of biasing members when not engaged with the carriage;
• and
• a controller electrically connected to the plurality of first magnetic members or the plurality of second magnetic members, wherein the controller is configured to actuate one or more of the plurality of first magnetic members or the plurality of second magnetic members to magnetically couple one or more of the plurality of first magnetic members to a corresponding second magnetic member of the plurality of second magnetic members to control a resistance force applied to the carriage;
• wherein the plurality of first magnetic members are comprised of a ferromagnetic material and the plurality of second magnetic members are comprised of electromagnets, wherein the controller is electrically connected to the plurality of second magnetic members.