Michelle Obama delivered a stern lecture to parents Thursday in front of a billion-dollar foundation.

Robert Wood Johnson Foundation named three strategies they and the first lady want families to implement: eliminate all sugar-sweetened beverages from the diets of children younger than 5, engage kids in physical activity every day and ensure that all children enter kindergarten at a healthy weight.

“I want to challenge you and folks across the country to make an RWJF kind of commitment at your own scale,” Obama said, according to Newsday.

“I want you to really dive into this issue in your schools, your organizations, community, your company, your family, wherever you are a leader and decision-maker. Dive in. If Robert Wood Johnson can invest half a billion dollars … surely we can push the envelope and aim just a little higher in our own efforts.”

The first lady referred to parents who buy healthy food “unsung heroes.”

She said the progress of remaking school lunches to fit her tastes “fragile”and urged the assembled activists to not become “complacent for one single minute.”

Obama’s appearance coincided with the foundation’s announcement of $500 million in new donations to organizations enacting the first lady’s “healthy” food agenda.

That’s on top of the $500 million the foundation gave to similar efforts in 2007.

“We’ve seen the progress we can make,” the first lady said, “when we educate parents and we help them make healthier decisions.”

CBS 2 reports after Obama’s speech at New York City’s Edward A. Reynolds West Side High School, she watched the kitchen staff prepare kale smoothies.

She was also “especially curious” about the school using coconut water and “asked what its value is versus regular water.”