(AP) — First lady Michelle Obama is helping a New York City museum spread some advice on health: Drink up — water, that is.

The first lady and fitness advocate was at the New Museum on Thursday to view a street-art-inspired exhibit that aims to make the health-conscious message eye-catching.

She signed a massive paint-by-numbers artwork created for the show and chatted with eighth-graders who helped paint it and created a poster of their own.

She told them their involvement in the campaign would make “a huge, huge impact on the health of our nation.”

The exhibit is a collaboration with the WAT-AAH! (WAH’-tah) bottled-water brand.

Mrs. Obama is celebrating the fourth anniversary of “Let’s Move,” her anti-childhood obesity initiative.