Is it hard for your arms when you when you do plank?

Diet

Why can't I do it for a long time because my arm is harder?


  118 3   5 years ago

pu1. It's because I used my arms a lot


2020-06-19

pu2. He uses a lot of strength in his arms and shoulders


2020-06-19

pu3. Oh really? I'll improve if I keep doing it, right?


2020-06-19


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