Adam Jensen was hand-picked to safeguard the secrets of America's top biotech firm. But when a black ops team breaks in and kills the scientists he was hired to protect, using a security plan he developed, he is thrust into a conspiracy shrouding mankind's future evolution.
Basically, this mod allows you to regen more than a single energy cell naturally. Just run the trainer (you need to leave it running while the game client is up since this is a memory hack) and adjust the regen level as you see fit and you are golden