Can you live on less than $5 per day?

Jennifer Caslin, who works at the food bank, says that's how much families receiving food stamps have to work with in North Carolina.

"It lets somebody walk a mile in somebody else's shoes, maybe get an understanding of the problem of hunger and sometimes how hard it is to make a budget stretch for a whole month," Caslin said.

She expects the challenge to teach her colleagues and friends how tough it can be to make nutritious food choices while on a limited budget.

The participants are chronicling their meals on social media using the hashtag #HungerChallenge.