CBS gives Tough As Nails two more runs

CBS has taken Tough As Nails to a fourth season

NEWS BRIEF: US broadcast network CBS has renewed its reality competition series Tough As Nails for third and fourth seasons, following the conclusion of the second run on Wednesday.

The series was created by producer and host Phil Keoghan and his producing partner Louise Keoghan and produced by Raquel Productions, in association with Tough House Productions. Competitors are tested for their strength, endurance, agility and mental toughness in challenges that take place at real-world job sites.