A portable therapeutic seat exercise apparatus and method that provide a
lightweight personal exerciser designed for a person to use to improve
physical status, and for the exercise, alignment, and stress reduction of
a person's trunk, spine, abdomen, pelvis, and thighs. It encourages and
enhances low back mobility in contrast to the static nature of regular
sitting. It consists of a lightweight contoured seating surface supported
by at least one arcuate hemispherical base that allows unrestricted
motion in all directions, including twisting, tilting, and rocking. It
can be placed on many seating surfaces including but not limited to
sofas, dining chairs, school desk chairs, office chairs, factory benches,
and motor vehicle seats. Its use facilitates low back muscular
stabilization, conditioning, strengthening, coordination, and enhancement
of proprioceptive senses. Interchangeable parts and add-on attachments
can be used in differing combination to vary height, depth, position, and
arc of the seat-supporting base.