Jeremy bentham's approach emphasizes the determination of behavior based on the amount of pleasure or pain the behavior can be expected to produce.

The answer to this question is Hedonistic calculous
An example of jeremy bentham's approach would be in the case of robbery.
Most members of the society see robbery as 'immorals' because they felt 'negative' results if that action happen to them, so they judge it as morally wrong. This sense of morality certainly wouldn't be applied in action that give 'positive result', such as working out for example