Brainstorm 2

Man invents the body kinetics energy machine. Attached to the leg, the forearm, a man can become a living battery. Jason Freeborn finds an ad to power such a prototype. He's poor and in dire need of money. The man has to stay up as much as possible to make enough power to make enough money. During these long hours of exercise a powering, he stumbles upon evil doers. Bashing them to bits, Freeborn goes superhero.