FOUR Cranebrook High School girls went without modern comforts, instead of food, to raise money for World Vision's 40 Hour Famine appeal.
Sarah Deheaume, Monica Meszaros, Gemma White and Anna Ybabao — all in year 7 — gave up their mobile phones, iPads and other luxuries for the best part of 48 hours.
"I also gave up snack food and ate only fruit between breakfast, lunch and dinner," Sarah said.
"But it was harder to do without technology.
"I was still able to watch TV, but most of it was boring, so I thought I'd read instead."
Monica said she promised to stop talking for 48 hours, but failed almost immediately.
"I gave up talking for only five hours," she said.
"It was hard because I'd forget I was not supposed to talk and then someone would talk and I'd say something."
Monica said she was more successful in eschewing the internet and mobile phones for 48 hours.
Anna also decided to give up talking, but failed in that even more spectacularly than Monica.
"I talked in the first hour," she said.
"But I also gave up junk food, YouTube and Google.
"It was hard; I love YouTube and Google, so I read newspapers, magazines and books."
Gemma set herself an altogether different challenge.
"I gave up chocolate, social media and using furniture," she said. "At night I slept on the floor; it really hurt.
"The hardest part was in class because teachers wouldn't let me sit on the floor, so I made up for that by sleeping on the floor longer."
But she said the most difficult part of her "fast" was not being able to use Instagram.
All the girls said they wanted to help people their own age in other parts of the world who had much less to do without.
"We're privileged to live here, but what about the kids who have no fresh water, not enough to eat and no computer games to play?" Anna said.
They raised $208 for their school's team, while Gemma raised another $300 and Sarah $115 for the appeal on their own accounts.