Twelve contestants are tested in competitions at real-world job sites with tasks that test their strength, endurance, life skills and mental toughness. Contestants compete in 6-on-6 team challenges, individual competitions, and elimination battles, referred to as 'Overtime'. Unlike other reality competitions, contestants who lose elimination challenges do not leave the game and still have the opportunity to win additional prizes during team competitions. Each team competition gives the winning team $12,000 ($2,000 per member) and earns the team that challenge's Badge of Honor. The team that has collected the most Badges of Honor by the end of the season receives an additional cash bonus of $60,000 ($10,000 per member). If both teams have the same number of Badges of Honor, then they will hold a tiebreaker.
In each episode, contestants compete in individual challenges in order to stay in the running for the grand prize. The lowest performers in each individual challenge are sent to Overtime, with the loser of the Overtime challenge eliminated from the individual competition (referred to in the show as 'punching out'). At the end of the season, one contestant is crowned the Tough as Nails champion and wins the grand prize of $200,000 and a Ford Super Duty truck.