Push him to continue

You heard that high intensity interval training can help prevent heart disease and reduce blood pressure over time. You continue to push him until he can't keep up with the machine and the safety turns it off. He collapses in a nearby chair, gasping for breath.....you tryna kill me?

Imagine the next steps in the scenario... how might this play out? How could you write a different ending? (As in go back and try again ;))