Challengers are asked to complete the task within 24-hours of being nominated and must chose three other people give it a go. Gates selected Tesla CEO Elon Musk, Ryan Seacrest and Chris Anderson from TED to participate next.

Other tech leaders have taken part in the trend, including Microsoft CEO Satya Nadella and Apple CEO Tim Cook. The ASL association says it's seen a $3 million rise in donations compared to last year thanks to the support raised by the challenge.