The "X-Men" star, Hugh Jackman has thrown his weight behind the Global Poverty Project's Live Below the Line drive, which asks those taking part to highlight world poverty by attempting to survive a week on a daily budget of just $0.63 (GBP1).
Supporters have to get through seven days between 2 and 6 May on limited means, but Jackman won't be able to take part in the challenge himself because he is due on stage in San Francisco, California to present his one-man musical show.
He says, "I know it sounds a little hypocritical - during that week I'm doing a show on stage where I sing and dance for two hours so I think it might be a little irresponsible of me to faint in the middle of a show. But I totally support it..."
"I don't mind saying I'm not doing it, because for people who want to do the challenge I'm totally thrilled and supportive of it and I think it's fantastic and there's 50,000 people around the world doing it."
Jackman will instead give up some of life's other luxuries - sugar, coffee and using his computer."
He adds, "I will be going without certain things... I want to encourage people like me, who can't for whatever reason, to do something symbolic... I'm going to give up my computer for a week, which actually secretly I kind of like, that's not so hard for me."
"So I am going to do two things which are really bad for me which is give up coffee, because I'm an addict, and I'm going to give up sugar as I'm an addict."
Hugh Jackman, in Performance at The Curran Theatre runs from 3-15 May.