A chin up is a variant of a pull up where your forearms are supinated, allowing you to grab the bar with an undergrip. The main muscle working here is still the latissimus dorsi, and it's still a compound exercise which uses a lot of helper muscles, but there are two key differences. Firstly, in a chin up, your biceps and brachialis are perfectly aligned with the line of grip tension, which allows them to engage really hard and help the movement. Secondly, because the elbows are in front of your
0:38
A chin up is a variant of a pull up where your forearms are supinated, allowing you to grab the bar with an undergrip. The main muscle working here is still the latissimus dorsi, and it's still a compound exercise which uses a lot of helper muscles, but there are two key differences. Firstly, in a chin up, your biceps and brachialis are perfectly aligned with the line of grip tension, which allows them to engage really hard and help the movement. Secondly, because the elbows are in front of your
1.1M views1 month ago
TikTokanatomy.of.motion
The forearm is the region of the upper limb between the elbow and the wrist, containing the radius and ulna bones. It houses over 20 muscles divided into anterior (flexor) and posterior (extensor) compartments, enabling crucial movements like wrist flexion/extension, finger movement, and forearm. #fyp #f
0:13
The forearm is the region of the upper limb between the elbow and the wrist, containing the radius and ulna bones. It houses over 20 muscles divided into anterior (flexor) and posterior (extensor) compartments, enabling crucial movements like wrist flexion/extension, finger movement, and forearm. #fyp #f
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Short videos

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A chin up is a variant of a pull up where your forearms are supinated, allowing you to grab
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