Considering we use our dominant arm for lifting, most tasks, holding things, etc.
In: Biology
I think i read a science article (possibly not actually science-backed) that said muscles on 1 side of the body grow if the opposite side does exercise to keep things in balance. So if you say exclusively did bicep curls with your right arm, your left bicep would still grow in size/strength to both physically balance you and also under the assumption that one day you might use the left for the same task.
My none dominant arm has always been bigger. It doesn’t matter what i try to do. Isoating exercises haven’t seemed to help.
I find that I use my right hand for more finesse tasks, but not necesarrily more strength.
I would not expect my right-arm to get noticiely more excercise, at least not with my lifestyle.
* I think I open jars lids with my left hand most of the time, holding the jar steady with my dominant right hand.
* My dominant hand uses a pen and computer-mouse, but these are not hard excercises.
* When I lift things, I tend to life equally, or even sometimes favour my left side, so that myright hand can do comparatively delicate things like opening doors or sign a document
My buddy spent a year opening gas valves with his dominant arm and it did get bigger than his left. He’s changed jobs now and they’re the same again
Your muscles don’t just continue to grow and grow, just because you use them. They aren’t going to grow unless you basically over stress them.
Like i lift an 8 pount piece of iron around 1300 times a day. When you first start to do that, your muscles will grow. Right up until the point that you’re no longer “tearing” the muscles to do that. Then they will stop growing because you are no longer damaging them.
Now, if you suddenly start lifting 9 pound parts, they’ll grow a little more and then stop again.
But they’re only going to grow enough that what you’re doing isn’t damaging the muscles anymore.
I work with tools and my right arm is like, 40% bigger than my left arm because I use it so much more. I have a small frame so it really shows
Bones make up for it. ‘Wolffs law’ isn’t ELI5, but to simplify bone density increases or decreases based on repeated loads placed upon them. For athletes where a dominant arm plays a big role; such as tennis and baseball players, there can be a ~15-20% difference. Your neural connection to dominant arm is also stronger.
So while the muscles might make it seem like there isn’t that much of a difference there is more going on beneath the surface.
Mine is, or was (muscles have now atrophied), and my entire right side was slightly larger. Chest, shoulder, neck and arms were all larger on my right side and I was also considerably stronger on my dominant hand side
Your muscles don’t get bigger just by using them more frequently.
If that were true our chest muscles would be enormous just from breathing.
The muscle has to work sufficiently hard (in short bursts) to grow larger.
You usually use your dominant hand more for things that require fine motor skills and you use your other arm more for things that require you to be strong so your non dominant arm is usually stronger
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