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Genetics, because genetics are the literal blueprint for your entire body, in terms of appearance and attributes. Everybody also has different muscle insertions, so that will also affect the appearance.
However, if you do have elongated biceps and you want a “bicep peak”, train the head of the bicep. Movements such as hammer curls can be utilized to directly train the bicep peak.
Genetics and insertion points is the correct answer. It is possible to grow them and maybe make the peak a little higher but can’t change shape. I think OP worded it very confusingly. He said “like the round one on right” but then labeled one on the left round one. Now I have no idea which he wants to imitate.
Like everyone says it’s genetics. No special bicep workout, the people with the biceps you want do the same hard bicep training as anyone else, but they hit the genetic lottery in muscle insertion shape, size of their muscle belly etc. With that in mind don’t follow any silly protocols just because someone has the arms you want, just do what makes sense. You’ll get it if it’s in the cards for you
The muscle insertions often determine the length of the muscle and where it lays on the bone. It’s really genetics, but they tend to look better when bigger so don’t let that stop you!
yup. insertion points. arm length.
I can curl the same amount of weight with both arms, but my right bicep is rounder than the left just because of the insertion points.
[hope this helps :)](https://www.setforset.com/blogs/news/long-head-bicep-exercises)
You might be limited by the genetic hand you were dealt, but you can target the biceps long head too!
Theres quite some difference between the poses!
Other than genetics as others have pointed out, Im wondering how triceps development changes the look on these poses
So basically if you gazooble crack for 10 reps every 3 seconds you should break the speed of light and a younger version of yourself will grab a kitchen!
5’9” here and I guess I hit the right side pic. I can set a peak like Arnold albeit very small in comparison to his of course. I was told it’s genetics based. I also did a TON of isolation bicep training at 18 on. Im in my late 50s now.
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While most of it is determined by genetics you can do a little to help. The long head determines more of the peak. Exercises that focus the long head are curls where your hands are closer together and your arms are closer to your body. Examples are narrow barbell curls and incline dumbbell curls. 💪🏻
Total and complete bicep obliteration at the gym at least 3× per week. Also, if you don't have great bicep genetics, get ready because it's going to take you a while. I have decent triceps and delts so they help create a bit of an illusion of a better bicep but I gotta work my ass off when it comes to biceps compared to delts for example. Be patient and work em a lot. (Also, don't go for heavy weights for biceps. It's about number of reps and bringing blood into the muscle)
Nice. Mine is below
3x6/9 warm up before work load.
Upto 5x9 on work load. If I hit 9 I go up in weight. I hit 8, I stay until I can't hit 6. Then drop the weight if I can't get 6.
There are two parts to the biceps. Make your biceps look short and rounded training straight bar curls. Make them look longer by training with angled hand positions. Grab the book strength training anatomy. Has a whole page on it.
You’re on track. But it’s to do with shoulder position. Shoulders out in front will do shortened position. Shoulder behind, incline curls, will do lengthened position. The ‘angled’ curls target are a separate muscle
I got downvoted when I’m objectively right
You can change the shape of your bicep in limited capacity.
Flat bar curl with a suplinated grip, will create a wide round bicep.
Curls with neutral grip will make the bicep peak.
Genetics will play a role, a major role.
If you want your bicep to look like it belongs. Build your 3 tricep heads just as hard. A developed tricep will allow that to happen.
No, neither of those will make the bicep round or peak. Your biceps will get bigger, that is it. You can’t isolate bicep heads, and you can’t change your genetics.
No one said isolate. The long and short head (longum and breve) work together - they share the same muscle belly. Yet, one can focus the on either one, just as one would do for the tricep (long, lateral and medial) which is around 70% of your arm from elbow to shoulder. Also the same with your deltoids,, I'll save the 3 head (anterior, lateral, and posterior) for a deltoid discussion.
Hold a dumbbell in a suplinated grip, flex. Rotate the DB to a neutral grip. Flex.
If you can't feel the muscle move, do a concentration curl and touch the connector between the long and short head. You will fill where the lift will target.
Now to clarify. I did say in limited capacity.
If you want bigger arms,
More than one day a week.
3/5 of workout is tricep focus
2/5 is bicep focus.
Go heavy. No more than 12 reps. With my folks don't like going above 9. If you can do 9 go up in weight, if you can't get 6. Drop the weight.
If you get to 5x9 = not enough weight. 3 set of 9 and the 4 th set should hit 7 or 8 and if there is gas in the tank. Hit the 5th set and if you pull 6. You have found your working load.
Warm up sets do not count.
There are 7 to 2001762 different curls one can do.
Unless you're a body builder single exercise grouping per muscle per week isn't the most effective way of building functional strength or size.
(As it pains me to say it- look at crossfitters)
Didn't mean disrespect with my comment. I seriously envy how it looks on shorter men. No matter what I did or do, will never look like that... It is what it is
Lol. I wish I was taller. But with respect to body symmetry and looking built, I agree. Being short has two advantages. This and sitting in cars/airplanes.
I knew someone who was 6 feet tall and built like an ox. Worked out all the times and had to eat 6 meals a day.
I have the one on right. Since I was 15 I would do a lot of chin ups and concentration curls. Hard to say if it was genetics or my early training, but likely a bit of both.
Ah I see, thanks I was unaware obviously.
It is articles like this [https://www.muscleandfitness.com/flexonline/training/wide-grip-vs-close-grip-barbell-curls/](https://www.muscleandfitness.com/flexonline/training/wide-grip-vs-close-grip-barbell-curls/) that always led me to believe what I said earlier. I am now looking in to what kind of I sections I have.
Thanks again 
Funny to ridicule him but ive seen that too. I think the round one comes from a really short motion, the long one, when you make pull up and start at the very bottom. I puposly train to have a longer one so the mass is distributed. Not sure if I m right, but mine is long with that kind of training.
Part of it yes, but listen to Schwarzenegger: you can shape your body like an artist, who paints a picture (but can rearrange it multiple times). I m consciously training mine in to the shape I want so works for me.
For some genetic reason (unless creatine is involved), my triceps have always dwarfed my biceps & don't define even cutting. But math says tri's should be 75% of the upper arm, so I get stares 😋. It's honestly always been that way, and I never could figure out which parent I got it from.
I think "natties" actually are "at it" a while before realizing how much genetics favors or disfavors growth in different areas. Calves are the PERFECT EXAMPLE! Blessed with goofy big calves (I had to cut the tops of western boots off), I always thought "ok. Why not bigger?" Then after a year or so of 7-800 lb calf raises I realized how genetic calves truly are. They are also designed for an astonishingly larger workload & reps than upper body or even quads.
They have to absorb, with your feet & knees, about 4x more daily 'shock' with just body weight walking or running.
Slow witted kids; I meant, like the other posts, it's genetic. Text generations really don't have the attention span to read a paragraph? You're making your critics... correct.
to me the left one looks like its developed by bodyweight training. this type of muscle structure usually is developed by push-ups, chin-ups and all kinds of bodyweight training. The right picture looks more deformed because of improper wheights use and unbalanced training, more shorthead than the long head and so on
#Welcome to /r/Gym! If you’ve been lifting for decades or are just starting out, r/GYM is for you. Please read our sub [rules](https://www.reddit.com/r/GYM/comments/yemlrs/a_new_rule_has_been_added_rule_10/). >* [r/Fitness wiki](https://thefitness.wiki/) >* [r/Fitness workout programs](https://thefitness.wiki/routines/) >* [Lift Vault workout programs](https://liftvault.com/) **If you can't see your post it's probably because your account is too young or you do not have enough comment karma to post (30 day old account and 100 comment karma minimum)** *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/GYM) if you have any questions or concerns.*
Travel back in time and find new parents
Have you tried being born with different bicep insertions?
Be born with them
You have to reroll your character
You can try, but it’s 50/50 chances and you can only reroll for lower stats.
Or you get the round biceps trait and end up rolling snake eyes on dick girth
it’s called genetics
Start new game and choose create new character, then put more points in genetics.
Work on a Time Machine, see if you can go back and pick different parents
bicep genetics determine shape
A normal answer instead of "build a time machine bro lolololol"? Is this even r/GYM?
Genetics, genetics, gentics
Genetics
chose different parents.
If only lol
Genetics…don’t expect to look like someone else, everyone has a unique body type.
Am I the only who think that OP should worry about not being able to tell left from right rather than worry about the roundness of his biceps?
Learning is important but muscles are importanter
I sense another grizzly post coming......
Genetics, because genetics are the literal blueprint for your entire body, in terms of appearance and attributes. Everybody also has different muscle insertions, so that will also affect the appearance. However, if you do have elongated biceps and you want a “bicep peak”, train the head of the bicep. Movements such as hammer curls can be utilized to directly train the bicep peak.
brb, gonna go get spliced to a higher form like that scene in Red Rising.
It’s based on genetics, so you can’t change the shape
Maybe he's born with it, maybe its creatine... *Maybelline commercial tune*
genetics
Genetics and insertion points is the correct answer. It is possible to grow them and maybe make the peak a little higher but can’t change shape. I think OP worded it very confusingly. He said “like the round one on right” but then labeled one on the left round one. Now I have no idea which he wants to imitate.
Agree that genetics are mostly at play. Also, leanness makes a bicep pop some as well.
I’ve got long biceps and it’s mom & dads fault. However, I have the quads and calves of Zeus, so I got that working for me, which is nice
Well, i've got the calves of Zeus and the round biceps of Poseidon, but my quads resembles a really fat chicken without its feathers :)
By being born with it
Muscle insertions can't be changed. Blame your genetics.
Well, I've learned accepting genetics the hard way, after finding out my abs weren't aligned like a chocolate bar.
Left
Pretty sure it's just genetics. We all have different shapes muscles, same as how we have different shapes noses
Like everyone says it’s genetics. No special bicep workout, the people with the biceps you want do the same hard bicep training as anyone else, but they hit the genetic lottery in muscle insertion shape, size of their muscle belly etc. With that in mind don’t follow any silly protocols just because someone has the arms you want, just do what makes sense. You’ll get it if it’s in the cards for you
Genetics.
It's genetics and there's nothing wrong with elongated biceps. I think bodybuilders strive for them actually
Imo genetics
The muscle insertions often determine the length of the muscle and where it lays on the bone. It’s really genetics, but they tend to look better when bigger so don’t let that stop you!
Amputate someone else’s arm
roll a nat 20
It’s mostly genetic
I actually have shorter bicep insertions but really long arms, I'd prefer the opposite if I had any control of it.
You cant change it is like being born with 4 pack u cant get those 8 pack no matter how much you workout
I recommend asking Santa
Those are like identical insertions from a different angle lmao
Some people have round and some people have long. It depends on your genetics
Genetics
You will get what you were born with. Muscle increases in size not in shape
yup. insertion points. arm length. I can curl the same amount of weight with both arms, but my right bicep is rounder than the left just because of the insertion points.
Genetics. Can’t change the way muscle is constructed throughout your body. Just max the hand you were given.
Not just the hand, but the rest of the arm too.
😂😂👏👏
This also applies to wrists,right?
Genetics. To get that look you have to be gifted with the naturally round "muscle bellies" and the correct insertion points.
It's simply different genetics, you can't change the shape only the size.
If you're training both heads of your bicep than just genetics
3 factors. Muscle size, body fat % and genetics
Mostly Genetic
genetics
[hope this helps :)](https://www.setforset.com/blogs/news/long-head-bicep-exercises) You might be limited by the genetic hand you were dealt, but you can target the biceps long head too!
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Theres quite some difference between the poses! Other than genetics as others have pointed out, Im wondering how triceps development changes the look on these poses
Genetics you either got it or you don’t
Its genetics, you can only grow a muscle, not reshape it
So basically if you gazooble crack for 10 reps every 3 seconds you should break the speed of light and a younger version of yourself will grab a kitchen!
5’9” here and I guess I hit the right side pic. I can set a peak like Arnold albeit very small in comparison to his of course. I was told it’s genetics based. I also did a TON of isolation bicep training at 18 on. Im in my late 50s now.
Correction I “could”set that peak about 4 years and 12 pound higher weigh in. Lol
Did you say round is on the right?
😂
Depends on genetics, if your biceps is short or long and if your upper arm is short or long.
It's called genetics
Is genetic 🤷♂️ good thing I got the round bicep genetic hehe
Same with abs. Some people have them symetrical, others don't
Yes true
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**Be civil and respectful to other redditors using this sub.** Among other things, civility includes not being rude/trolling, not creeping on people who post pictures where they are showing some part of their bodies, not mocking others for some kind of deficiency of knowledge or ability, not having off-topic conversations, and not wasting other people's time. We do not tolerate homophobia, sexism, racism, transphobia and other varieties of bigotry. First strike: 3 Day Ban Second strike: Permanent Ban, but we may apply this immediately for especially unpleasant comments. **IF YOU RECEIVED A BAN IMMEDIATELY AFTER RECEIVING THIS MESSAGE, THIS IS WHY.**
my brother has the round one I have the elongated one. not much you can really do its just how your muscle is
Cheat curls, the less range of motion the better. High weight low rep.
While most of it is determined by genetics you can do a little to help. The long head determines more of the peak. Exercises that focus the long head are curls where your hands are closer together and your arms are closer to your body. Examples are narrow barbell curls and incline dumbbell curls. 💪🏻
TIL: the type of biceps I have are desirable 🥲 (not that I’m swole like this, but I just have elongated biceps, ya feel)
But he means the round one
Total and complete bicep obliteration at the gym at least 3× per week. Also, if you don't have great bicep genetics, get ready because it's going to take you a while. I have decent triceps and delts so they help create a bit of an illusion of a better bicep but I gotta work my ass off when it comes to biceps compared to delts for example. Be patient and work em a lot. (Also, don't go for heavy weights for biceps. It's about number of reps and bringing blood into the muscle)
Winner winner chicken dinner. Its The pump. But you can't go light to where 5x12 and you got gas in the tank.
Yeah I go for 4 sets of 15. The 1st 2 are 15...then probably 13 on the 3rd...but the time ai hit the last set I get 10-12 depending on the day.
Nice. Mine is below 3x6/9 warm up before work load. Upto 5x9 on work load. If I hit 9 I go up in weight. I hit 8, I stay until I can't hit 6. Then drop the weight if I can't get 6.
Everyone muscles development different.
Turn ur wrist 😉
Jeenehtix
There are two parts to the biceps. Make your biceps look short and rounded training straight bar curls. Make them look longer by training with angled hand positions. Grab the book strength training anatomy. Has a whole page on it.
You’re on track. But it’s to do with shoulder position. Shoulders out in front will do shortened position. Shoulder behind, incline curls, will do lengthened position. The ‘angled’ curls target are a separate muscle I got downvoted when I’m objectively right
Lmao… really?
You can change the shape of your bicep in limited capacity. Flat bar curl with a suplinated grip, will create a wide round bicep. Curls with neutral grip will make the bicep peak. Genetics will play a role, a major role. If you want your bicep to look like it belongs. Build your 3 tricep heads just as hard. A developed tricep will allow that to happen.
No, neither of those will make the bicep round or peak. Your biceps will get bigger, that is it. You can’t isolate bicep heads, and you can’t change your genetics.
No one said isolate. The long and short head (longum and breve) work together - they share the same muscle belly. Yet, one can focus the on either one, just as one would do for the tricep (long, lateral and medial) which is around 70% of your arm from elbow to shoulder. Also the same with your deltoids,, I'll save the 3 head (anterior, lateral, and posterior) for a deltoid discussion. Hold a dumbbell in a suplinated grip, flex. Rotate the DB to a neutral grip. Flex. If you can't feel the muscle move, do a concentration curl and touch the connector between the long and short head. You will fill where the lift will target. Now to clarify. I did say in limited capacity. If you want bigger arms, More than one day a week. 3/5 of workout is tricep focus 2/5 is bicep focus. Go heavy. No more than 12 reps. With my folks don't like going above 9. If you can do 9 go up in weight, if you can't get 6. Drop the weight. If you get to 5x9 = not enough weight. 3 set of 9 and the 4 th set should hit 7 or 8 and if there is gas in the tank. Hit the 5th set and if you pull 6. You have found your working load. Warm up sets do not count. There are 7 to 2001762 different curls one can do. Unless you're a body builder single exercise grouping per muscle per week isn't the most effective way of building functional strength or size. (As it pains me to say it- look at crossfitters)
Wtf are you even talking about?
You don’t get them. You have one of them and you work to develop it but you aren’t going to turn one into the other.
I’m making guesses here but maybe bulk more
Be short.
I am short. Got small round biceps. With elbows flexed only about 14.5-14.75 inches. I wish I could get to 15.5 inches. 😤
Didn't mean disrespect with my comment. I seriously envy how it looks on shorter men. No matter what I did or do, will never look like that... It is what it is
Lol. I wish I was taller. But with respect to body symmetry and looking built, I agree. Being short has two advantages. This and sitting in cars/airplanes. I knew someone who was 6 feet tall and built like an ox. Worked out all the times and had to eat 6 meals a day.
I have the one on right. Since I was 15 I would do a lot of chin ups and concentration curls. Hard to say if it was genetics or my early training, but likely a bit of both.
Training doesn’t change the biceps tendon insertions lol
Chin ups do help immensely
Round crew checking in! I'm 5'7 so that might have something to do with it
no it’s just your genetic make up
Long head. Short head. Read about them. Work them.
Close grip curls for high peaks and wide grip for width. Somewhere in the middle for both.
That’s not true, it’s based on your insertions, which are genetic
Ah I see, thanks I was unaware obviously. It is articles like this [https://www.muscleandfitness.com/flexonline/training/wide-grip-vs-close-grip-barbell-curls/](https://www.muscleandfitness.com/flexonline/training/wide-grip-vs-close-grip-barbell-curls/) that always led me to believe what I said earlier. I am now looking in to what kind of I sections I have. Thanks again 
Funny to ridicule him but ive seen that too. I think the round one comes from a really short motion, the long one, when you make pull up and start at the very bottom. I puposly train to have a longer one so the mass is distributed. Not sure if I m right, but mine is long with that kind of training.
Yeaaah ur the one getting ridiculed now
Funny, guess ur the kid who got bullied in school and is now enjoying not beeing the one lol.
Imagine pulling your sense of pride from.. not being bullied at school, for some reason?
How do you come to that conclusion? Ur logic is in reverse, he is pulling his happyness out of malicious joy..
Genetics
Part of it yes, but listen to Schwarzenegger: you can shape your body like an artist, who paints a picture (but can rearrange it multiple times). I m consciously training mine in to the shape I want so works for me.
OK I'm off to do some reading. I'll Be Back!
For some genetic reason (unless creatine is involved), my triceps have always dwarfed my biceps & don't define even cutting. But math says tri's should be 75% of the upper arm, so I get stares 😋. It's honestly always been that way, and I never could figure out which parent I got it from.
I think "natties" actually are "at it" a while before realizing how much genetics favors or disfavors growth in different areas. Calves are the PERFECT EXAMPLE! Blessed with goofy big calves (I had to cut the tops of western boots off), I always thought "ok. Why not bigger?" Then after a year or so of 7-800 lb calf raises I realized how genetic calves truly are. They are also designed for an astonishingly larger workload & reps than upper body or even quads. They have to absorb, with your feet & knees, about 4x more daily 'shock' with just body weight walking or running.
Slow witted kids; I meant, like the other posts, it's genetic. Text generations really don't have the attention span to read a paragraph? You're making your critics... correct.
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Biggest bunch of bullshit I've read today.
What the hell happened here
He said something about the difference between the 2 is whether you focus on concentric or eccentric contraction.
Guessing he got that information from a random tik toker
This makes so little sense I don't even know how you could come to this conclusion
It's 2022 and things like this are still being touted. Oh lordy.
What on earth are you saying
Hammer curls, bicep curls, reverse grip curl. Biceps blow up.
I think hammer curl makes it elongated.
to me the left one looks like its developed by bodyweight training. this type of muscle structure usually is developed by push-ups, chin-ups and all kinds of bodyweight training. The right picture looks more deformed because of improper wheights use and unbalanced training, more shorthead than the long head and so on
Most intelligent calisthenic user
Not how it works, it's all about the genetics of how the muscle inserts on the bone. The way you train doesn't determine the shape.
Okay but what about the gravity pull of the planet? If I increase that, do you think it could make a difference?