 Upon its release, "No Sleep" was met with mixed response from music critics.Josef Gasteiger of German magazine "Laut" criticized the album's content and its lyrics as "boring", while pointing out the lack of profundity and stating that the songs sounded like demo versions.He further suggested that "Keep On" and "Hurtful" would have sounded better as ballads, and picked "I Swear" as the highlight on the album.