NOVELTY - The apparatus has a support frame (110) supporting a body support platform, where the support frame is made of structural steel. A pendulum (170) has a set of segments, where one segment is pivotably connected to the frame and another two segments are proceeds from the former segment and defined by corresponding bending angles. A connection unit e.g. cross bar (180), connects the pendulum with a user`s legs. A support bar (140) engages a catch (145) to lock and releases the pendulum. A stop (210) attaches a circular weight, and a strap is connected to the pendulum and engages legs of a user.    USE - Used for exercising lower back muscles (claimed) for cartilage injury, local blood circulation, and back muscle injury of an individual, to maintain spinal erector and hip flexor in a reasonable condition, by an athlete and power lifter.    ADVANTAGE - The arrangement of the support bar engaging the catch prevents the swinging movement of the pendulum in forward direction, hence enabling safety and ease mounting of the exercise apparatus. The design configuration of the apparatus avoids hyperextension of lower back muscles, while facilitating for conditioning and muscle tone, hence increasing the local blood circulation to injured muscles and tissues in the lower back. The apparatus provides a sufficient range of motion to adequately load the low-back spinal erectors and enables a greater traction to the lumbar region. The apparatus decreases the load on intervertebral disks and increase intra-abdominal pressure. The support frame is made of structural steel, thus providing a very rigid support structure to the apparatus.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for exercising the lower back and upper legs.    DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a lower back exercise apparatus.    Support frame (110)    Body support (130)    Support bar (140)    Catch (145)    Handle bar (150)    Pivot bar (160)    Bearing (165)    Pendulum (170)    Cross bar (180)    Stop (210)