Mumford & Sons fret so much before their live shows, they often suffer panic attacks and forget their words on stage.
The British folk rockers rose to fame after releasing debut album Sigh No More in 2009, but they are still overcome by stage fright when they perform in front of large audiences.
Frontman Marcus Mumford tells Q magazine, "(We suffer from nerves by) forgetting words. Shaking, panic attacks. Sweating a lot. Crying a little bit. A desperate need for the toilet. But forgetting words is the worst. It happens a lot, especially when we do live television."