Insomnia is Good for You is a 1957 British short second feature ('B')[1] comedy film directed by Leslie Arliss and starring Peter Sellers as Hector Dimwittie.

[2][3] It was produced and released by Park Lane Films, and written by Lewis Griefer and Mordecai Richler.

Salesman Hector Dimwittie is unable to sleep during the weekend before a dreaded Monday meeting with his boss.

[8][9] The Monthly Film Bulletin wrote: "Despite an amusing and satirical opening and occasional bright moments later, most of the humour falls very flat, despite the talent and hard work of Peter Sellers.

One short sequence, however, in which Dimwiddie demonstrates the various positions (all neatly labelled) an insomniac may adopt, is notable.