I started thinking about this as I was grating a carrot and then making dalgona with a regular whisk, both of which I have to take breaks every minute or so because it’s a legit work out. As I do more and more of these kinds of activities countlessly all day long for the last 20 years of my life, how come my hands are relatively in the same shape even though my LH mainly only supports my RH in the most activities?
I also only very recently started weightlifting. So prior to about 2 months ago I wasn’t doing anything that would “even out” the work my LH and RH are doing.
My RH is for sure stronger than my LH because I can’t open a jar with my LH, but how come they look the same if it’s been my RH doing all the heavy lifting my entire life?
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Your hands don’t really have very many muscles. Or rather your fingers aren’t actuated by muscles in your hand. Instead they are connected to tendons that connect to muscles in our **forearms**.
[Take a look at this chart.](https://upload.wikimedia.org/wikipedia/commons/d/d1/Musculus_abductor_digiti_minimi_%28Hand%29.png) You can see that within the fingers there are no muscles, just tendons that run across the palm or the back of the hand. In fact you can see this yourself by looking at your palm and inner wrist as you flex your middle finger or ring finger; you should see the tendons moving in your wrist that are pulling your fingers to make them move.
Because of this arrangement someone with strong hands will have more toned **forearms** instead of the hands themselves.
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