The strength of the gripper can be judged by the facial expression

There is a gripper that develops hand gripping power. Because it is good for developing fine muscles in the arms, I sometimes use a gripper.

However, there are times when I wonder how much gripper I should buy.

There is a standard for grip strength, but there is a product that lets you know the facial expression on the packaging of the gripper.


In fact, each person has different strength, so facial expressions are relative, so it's not accurate, but it just gives you a feeling.

I like this visualization!




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