|Directed by||Anthony Kimmins|
|Produced by||Basil Dean |
|Written by||Anthony Kimmins|
|Music by||Ernest Irving|
|Cinematography||John W. Boyle |
|Edited by||Ernest Aldridge|
George Formby again plays his working class underdog, gormless, gullible, indefatigable and triumphant hero. A weakling, Formby's character overcomes obstacles to beat a corrupt rival in the boxing ring. He plays a scrawny barber's assistant who, in response to the keep fit fad sweeping through Britain at the time, dreams of a better physique, and sings of it in the catchy "Biceps, Muscle and Brawn". He falls in love with a beautiful manicurist, and competes for her affections with a muscle bound thug. The manicurist is more attracted to the brute until the barber can prove that he is a crook, and defeat him in the boxing ring.
- George Formby as George Freen
- Kay Walsh as Joan Allen
- Guy Middleton as Hector Kent
- George Benson as Ernie Gill
- Gus McNaughton as "Echo" Publicity Manager
- Evelyn Roberts as Mr Barker
- Aubrey Mallalieu as Magistrate
- Edmund Breon as Sir Augustus Marks
- Hal Gordon as Reporter
- Hal Walters as Racing Tough
- C. Denier Warren as Editor
- Edgar Driver as Boat Hire Owner
- Leo Franklyn as Racing Tough
- Robert Nainby as Judge At The Gym
- Julian Vedey as Hairdressing Dept Head
- Jack Vyvian as Boat Hire Man
- D.J. Williams as Editor of The Gazette
- "Keep Fit - Sky Movies HD". Skymovies.sky.com. 2002-05-23. Retrieved 2014-03-12.
- "Keep Fit (1937) - Trailers, Reviews, Synopsis, Showtimes and Cast". AllMovie. Retrieved 12 March 2014.
- Nield, Anthony (8 April 2010). "Keep Fit DVD Video Review". Film, the digital fix. Retrieved 12 March 2014.
- "Keep Fit - Sky Movies HD". Skymovies.sky.com. 23 May 2002. Retrieved 12 March 2014.
This section lacks ISBNs for the books listed in it. (April 2015)
- Low, Rachael. Filmmaking in 1930s Britain. George Allen & Unwin, 1985.
- Perry, George. Forever Ealing. Pavilion Books, 1994.
- Wood, Linda. British Films, 1927-1939. British Film Institute, 1986.
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