Tonight (1/11) on CBS 8 at 10PM you can catch an all-new episode of "Tough as Nails." The show features essential workers, who are put to the test in various challenges, all to win a huge cash prize. The show’s host, Phil Keoghan, talked with The FOUR about what you can expect in tonight's episode and why this is a passion project for him. Watch more segments from The FOUR here: https://www.cbs8.com/four