Total Wipeout host Richard Hammond says he would never be a contestant on the show himself -- as he fears he might find the experience "painful".
Hammond, whose daredevil stunts on Top Gear have been well-documented, including being rushed to hospital in 2006 after a high-speed smash, said he would draw the line at taking part in the slapstick BBC One contest.
The programme sees members of the public embarking on exciting journeys across the globe to tackle extreme obstacles amid water and mud in a purpose-built course in Argentina.
Asked by the Radio Times if contestants were ever injured, Hammond said: "There's the odd dislocated shoulder.
"They have two ambulances on standby. That's why I would never do it -- it might be painful."
Speaking about whether he had ever laughed when he shouldn't, Hammond said: "I do every week. But it isn't cruel because the contestants have volunteered to be on the programme -- and that gives me the right to laugh."
On what the future held for his television career, Hammond joked: "Top Gear will roll on while we get older and fatter until we can't squeeze in and out of the cars, probably."
He added: "I'm a very lucky boy who gets to present programmes I love."