Josh Groban is taking part in the 'Live Below the Line' campaign that encourages people to live on less than $1.50 per day on food and drinks. Over 1.4 billion people live on this amount, and the idea is for us to experience what that is like.

Groban, along with other celebrities like Ben Affleck are forming teams to go through the experience, which is actually a challenge. They have tips and ideas on how to do this at their website.