If you think wriggling into your cycling lycra or trussing yourself up in a tux is tricky, think again. Donning an astronaut's space suit is no mean feat—as this video shows.

Norman Chan and Will Smith from Tested visited NASA to learn exactly how astronauts dress. There are highs—we get to see, for instance, the awesome tools they wear on their utility belts—but plenty of lows, too. Yes, we mean the adult diapers. [YouTube]