How to use an inversion table for back pain<br>Secure your inversion table on a flat surface. Ensure that all the joints, straps and pivot points are correctly connected. Do this every time you use the table in order to avoid a serious accident.
an inversion table is used in math
used for back pain
( z1 use :ARG1 ( z2 table :mod ( z3 invert ) ) :ARG2 ( z4 mathematics ) )