Does a human perform involuntary actions by their own power or not?

If the questioner means involuntary actions such as the movement of the intestines, heart, and tremors, then these actions are not considered among a person's earnings, because they occur without his will or choice. Ability is the attribute that enables a living being to act or refrain from acting by will. Ibn Abi Al-Izz explained that the servant's actions are of two types: one type occurs from him without the conjunction of his power and will, such as the movements of one who is trembling, and another type is conjoined with the creation of his power and choice, such as voluntary movements.