"Limitless" is an American documentary series about the limits of human potential. Chris Hemsworth travels the world, scaling snowy peaks of mountain ranges and diving to the depths of the sea to test the resilience of his body. He experiments with different types of diets, physical training, and psychological techniques. The actor and athlete's goal is to prove that the human body is capable of more than we commonly believe, while also conquering the aging process and improving overall health.