Cover of the November 2007 edition
|Editorial Director||Peter McGough|
|Staff writers||Allan Donnelly|
|First issue||April 1983|
|Company||American Media, Inc|
|Based in||New York City, U.S.|
Founded in 1983 by Canadian entrepreneur Joe Weider, local versions (essentially the U.S. content with local advertisements) are now published throughout the world, in countries such as the UK and Australia. The premier issue was dated April 1983, and featured Chris Dickerson on the cover. Flex centers more on "hardcore" and professional bodybuilding, as opposed to its companion publication Muscle & Fitness, which has a more mainstream fitness focus.
In March 2018 it was announced that Flex magazine would merge with Muscle & Fitness to become one magazine. Flex has also combined with the Muscle & Fitness website as well.