Proof of Youth is the second studio album by English band The Go! Team. It was released on 10 September 2007 in the United Kingdom by Memphis Industries and a day later in the United States by Sub Pop. Proof of Youth was preceded by two singles: "Grip Like a Vice", released on 2 July 2007, and "Doing It Right", released on 3 September 2007. The first pressing of the album on Compact Disc includes a second disc, with six additional tracks in the UK or four in the US.