The Biggest Loser always seems to have a fear-of-heights challenge. What phobias do you want them to branch out into?

• Ophidiophobia -- Snake jumpropes!

• Claustrophobia -- Exercising in a confined space!

• Necrophobia -- Have them tunnel out of their own graves!

• Coulrophobia --Scary clowns chase them around a racecourse!

• Jillianphobia ... oh, wait...