1. The Best Kettlebell Quad Exercise for the Rectus Femoris Muscle

    The Best Kettlebell Quad Exercise for the Rectus Femoris Muscle

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  2. Basic exercise for the quadriceps(barbell/dumbbells/body weight)

    Basic exercise for the quadriceps(barbell/dumbbells/body weight)

  3. The flexion of the hip

    The flexion of the hip

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