Flexion or extension of a certain body part typically refers to joints. Flexing a joint usually means closing it, and decreasing the angle between the body parts, while extending a joint means opening ...
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Do You Understand Flexion vs. Extension? Here's What the Difference Can Mean for Your Workouts.
TRAINING EFFECTIVELY MEANS training smart. There are plenty of gym-centric terms floating around the fitness zeitgeist that won’t necessarily help you become stronger or build more muscle, especially ...
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