Regular exercise at the fresh air conduces to your health.
Still rather classic scenario. She got an enema before the run.
Now she has to smell it and will soon taste her own shit, or loose
the ability to breathe. And of course that is not a simple glass pane,
she is running on. It is a transparent rubber belt, moving at an increasing rate.
The electric shocks from the needles in her nipples and clamps at her labia should
additionally motivate her to pick up her pace and be careful not to slip, or she
might hang herself too. For those, who need an explanation, the chain is fixed to
a crane. No cost too high for some good, clean fun outdoors.