“The Biggest Loser” (8 p.m., NBC): On “The Biggest Loser,” the contestants

“The Biggest Loser” (8 p.m., NBC): On “The Biggest Loser,” the contestants are banned from the kitchen for a week, forcing them to make healthful choices at restaurants. We’re guessing the Grand Slam Breakfast is probably a no-no.

“Dirty Jobs” (9 p.m., Discovery): A new season of “Dirty Jobs” begins as our beleaguered host, Mike Rowe, does some marine salvaging in Miami and crushes mattresses in San Francisco. Hey, it’s good work if you can get it.