Next Monday through Friday, BEN AFFLECK will live on just $1.50 in food and drink. It's all part of the "Live Below the Line" challenge, which is an effort to raise awareness of global poverty.
Other celebrities are doing it too, including SOPHIA BUSH, DEBI MAZAR and JOSH GROBAN. Josh did it last year, and was so inspired he wrote a song called "Below the Line". (You can listen to it here.)
It's estimated that 1.4 billion people around the world live on just $1.50 a day. For more information on the Live Below the Line challenge, hit up this website.