Summary: In the name of science and adventure, extreme-performer Ryan Stock and his partner AmberLynn Walker, push the frontiers of what the human body can endure. By making the world-class good sport Ryan a human guinea pig. Ryan doesn't read about projectiles; he puts himself in the line of fire. He doesn't use facts and figures to explain impacts; he gets tackled by 320-pound football player. Guinea Pig explores the incredible ability we have and the limits of human endurance. Having established supposed limits, we explore how the human body is able to exceed them. Adding to the cast of characters on Guinea Pig are members of the extreme-performer community, of which Ryan and AmberLynn are a part. These include acts found in a variety of performing groups including the internationally renowned Jim Rose Circus and Ryan's own Canadian troupe, Mayhem. Real, live experts also join in to explain what is happening and why.