For many of us tight budgets are nothing new.  In this economy, we've learned to stretch a dollar pretty far.  But could you live on a $1.50 a day? 1.4 billion people world wide live in extreme poverty. Celebrities Selena Gomez and Nick Lachey are trying to do just that to raise awareness of poverty around the world. On Monday, Lachey started this five day challenge, "Live Below The Line", and admitted on Twitter that he was struggling with his reduced expenses, resorting to rice, one egg and tap water for breakfast. By Tuesday, he cut back to oatmeal and tap water for breakfast as eggs proved to be too expensive.  Pop star/actress Selena Gomez is also cutting back her spending for the five-day experiment.  Wonder if she is doing as well as Nick?