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15 Sekunden vorwärts
15 Sekunden vorwärts
Today we are joined by Jason Marshall Jason Marshall is the owner of a performance training studio in Lubbock, TX called Lone Star Kettlebell. He earned his Bachelor of Science in Exercise and Sport Science from Texas Tech University in 2001. He is currently a Master Instructor with the StrongFirst organization. He also holds a certified personal trainer designation from the National Academy of Sports Medicine.

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