Contestants on the quiz show “Jeopardy!” got a surprise Tuesday night when first lady Michelle Obama appeared to tout her Let’s Move! campaign.

To promote her anti-childhood obesity initiative, the first lady got her own category on the long-running quiz show, asking the three contestants questions about sodium, vitamins and healthy cooking.

“You can find it in a variety of dishes and foods like canned salmon,” read one of the clues. “Because it contains tiny edible bones, 4 ounces provides 25 percent of the daily recommended amount of this mineral.”

The answer: What is calcium?

Obama previously delivered a “Jeopardy!” clue in 2012.

Watch Michelle Obama’s appearance above.