Share While most men struggle to successfully complete the challenge, Ed smashed it, leaving Tiff, 36, surprised. 'You're supposed to fall down!' she told him, while an unfazed Ed added, 'If you can't do that, you're pathetic.' Humble brag: 'You're supposed to fall down!' she told him, while an unfazed Ed added, 'If you can't do that, you're pathetic' Former football star Brendan Fevola completely failed when he attempted the challenge last month. Experts say the reason men fall and women don't can be explained by the natural centre of gravity difference between men and women. Generally speaking, men are built longer and larger than women, and their proportions make it more difficult to move in the same fashion.