A famine activity for highschool youth group members that you cant eat for 30 hours?

My friend in South Carolina explained to me a project / activity her youth group is doing. To support the starving children in africa they all signed a paper that they would not eat for 30 hours, for charity in Africa. As soon as I heard this I thought it was ridiculous! I think its wonderful that they are raising money but they arent eating for an extensive period of time. There are adults that lead this christian youth group and I thought why would they ever recommend that high school kids would go without eating for more than a day. What about the kids who didnt eat the day before ( like my friend) ... By the way , she ped out last night after her shower so she ate something.... And supported by a christian youth group?! What about anorexia? This activity just may support that eating disorder.. What are your opinions on this?