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DigitalBlue's avatar

One arm is bigger than the other from lifting weights, what do I do now?

Asked by DigitalBlue (7072points) March 1st, 2013

I have been strength training for the last couple of months, and I just noticed that my right forearm is considerably bigger than the left. I don’t know that anyone else would necessarily notice unless I pointed it out, but I don’t want them to be uneven, and I also don’t want it to get worse. My upper arms look the same, but my forearms are lopsided. The right side is also more defined than the left.
I do the same exercises on both sides of my body, so how do I fix this? Should I do less on the right until they level out? Will it work itself out on its own? I’ve never had this happen before.

I feel like a teenage boy cliche, but I’m a grown woman.

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14 Answers

bookish1's avatar

Maybe someone will have some ideas, but I’m not sure how you can avoid this. No one’s body is completely symmetrical, and it’s not unusual for the muscles on our dominant side to be bigger. My right bicep is also larger than my left. I’m sure no one will notice but you.

DigitalBlue's avatar

@bookish1 yeah, I wouldn’t expect symmetry, but you think it’s normal? They look completely different, where even my upper arms look at least similar on each side.
Maybe it is normal.

bookish1's avatar

@DigitalBlue, wait for some other opinions, but I say it’s fine. Seriously, my upper arms are so dissimilar in size that tight sleeves will sometimes fit my left arm but not my right.
If it’s really bothering you, maybe you can ease back on the exercises for that arm, or try to do more with the other arm! But I really don’t think you need worry on a medical level.

DigitalBlue's avatar

@bookish1 right, yeah, I am not worried medically per se. Aesthetically, a bit, but mostly it was just curiosity. If it’s pretty normal, than I won’t pay it any mind.
Thanks. :)

marinelife's avatar

It tends to be natural. I am not sure there is anything you can do. Do a few fewer reps on the bigger side?

Pachy's avatar

Deleted by Pachy.

Adirondackwannabe's avatar

@DigitalBlue I wouldn’t worry about it too much. No one’s symetrical. If you want do more reps on the smaller arm or less on the bigger one as another jelly suggested. Have you ever seen a bullrider? Now that’s noticeable. :)

DigitalBlue's avatar

@Adirondackwannabe no, I haven’t, but now you have me looking for pictures.

Adirondackwannabe's avatar

@DigitalBlue I was thinking of Adriano Moraes. His riding arm was twice as big as his balance arm. Plus my s/o thought he was hot.

thorninmud's avatar

I’d bet that it was bigger before you started working with weights, but you’re just paying more attention now to your musculature. You haven’t been working your right arm harder, or using more weight on that side, have you? If not, then you’re probably just now seeing the effects of a lifetime of asymmetrical work.

woodcutter's avatar

You have to masturbate using the weak side until things even up. It’s all in the torque applied.

zenvelo's avatar

Use dumbells to develop asymmetrically. It’s good for balance and coordination, too. Use 20 lbs on the right, and 25 lbs on the left, single arm curls. Or press the uneven dumbbells.

ucme's avatar


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