ARX | Dr. Doug McGuff - Full Workout on ARX
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ARX | Dr. Doug McGuff - "You guys are making a Tesla-level jump here"
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ARX | FULL Interview w/ Dr. Doug McGuff | 10 year Anniversary of Body By Science
15:07
What Is ARX? (Full Product Tour)
13:35
Doug McGuff MD. Instructs an Intense Workout | HITuni
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Hypertrophy is a Side Effect
22:06
Resistance Exercise for the Neck
1:08:33
Doug McGuff: Resistance Exercise
11:22