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This question falls down to personal opinion. The first hurdle is what "most popular" means to someone, because there are factors like price, effectiveness and how much space the equipment requires. It could be said that the human body is the most popular. This is simply because the human body is capable of so many activities which help someone work out (for example; push ups, squats etc.) If done right, these activities could be just as useful as a physical piece of equipment.
What else can I help you with?
What are the release dates for Muscle Car Workout - 2012?
Muscle Car Workout - 2012 was released on: USA: 2012
What are the release dates for Harley's 5-Factor Workout - 2012?
Harley's 5-Factor Workout - 2012 was released on: USA: December 2012
What are the release dates for What To Expect When You're Expecting Workout - 2012?
What To Expect When You're Expecting Workout - 2012 was released on: USA: December 2012
What are the release dates for Jerome Mayberry's Workout Stick - 2012?
Jerome Mayberry's Workout Stick - 2012 was released on: USA: 27 February 2012
What are the release dates for Ballet Beautiful Total Body Workout - 2012?
Ballet Beautiful Total Body Workout - 2012 was released on: USA: September 2012
What are the release dates for Mansome - 2012 Playground Workout 1-68?
Mansome - 2012 Playground Workout 1-68 was released on: USA: 25 October 2012
What are the release dates for Harley Pasternak's Hollywood Workout - 2012 VG?
Harley Pasternak's Hollywood Workout - 2012 VG was released on: USA: 18 September 2012
What are the release dates for The Flip Side - 2012 Workout 1-3?
The Flip Side - 2012 Workout 1-3 was released on: USA: 3 December 2012
What are the ratings and certificates for Muscle Car Workout - 2012?
Muscle Car Workout - 2012 is rated/received certificates of: USA:G (self applied)
What actors and actresses appeared in Muscle Car Workout - 2012?
The cast of Muscle Car Workout - 2012 includes: Megan Clementi as Herself - Host
What are the release dates for Flabulous - 2012 Total Body Workout 1-7?
Flabulous - 2012 Total Body Workout 1-7 was released on: USA: 5 June 2012
What are the release dates for Harley's 5-Factor Workout - 2012 Day 3 - 1.5?
Harley's 5-Factor Workout - 2012 Day 3 - 1.5 was released on: USA: December 2012
