The Guinea Pigs discover what causes seasickness and in a British TV first, volunteer to get tasered to feel 50,000 volts in the human body.
The Guinea Pigs discover whether you can get drunk without drinking and why belly flops are so painful.
The Guinea Pigs are pushed to the absolute limits of stupidity as they're shot with rubber bullets and Ollie is chased by an angry dog.
The Guinea Pigs are pushed to the limits of stupidity as they're repeatedly karate kicked and rugby tackled to demonstrate the principles of physics.
In tonight's episode, Dan is cured of his fear of heights by wingwalking and Kirby finds out if carrots can make you see in the dark.
The Guinea Pigs are pushed to the absolute limits of stupidity as they're covered in leeches and we discover just how much fat is in Dan's spare tyre.
The Guinea Pigs experience extreme cold to discover why the cold makes you pee and find out about a cow's digestive system by eating buckets of tripe.
The Guinea Pigs discover what its like to be ladies and Ollie hallucinates as a result of extreme sleep deprivation.