HomeexerciseDoes Weight Training Really Reduce Breast Size In Women?

Does Weight Training Really Reduce Breast Size In Women? [Updated 2023]

Does weight training reduce breast size in women

Does Weight Training Really Reduce Breast Size In Women?

One of the most common myths about weight training for women is that weight training reduces breast size and creates a flat manly looking chest. Even today in the 21st Century when we have access to so much in the way on information, the idea of weight training reducing breast size persists. The flat out answer is no, weight training does not reduce breast size in women. And this misconception has unfortunately prevented so many women from incorporating weight training into their quests to lose weight and firm up their bodies. And instead driving them towards aerobic exercises and extremely light weight training. Practice that inevitably lead to failure as intense weight training is without question the most effective way to increase muscle definition, tone up and develop a tight body. But what about the prospect of becoming flat chested? To answer that I can honestly say that unless you plan on starving yourself  or using anabolic steroids, women have little to worry about in terms of their breasts getting smaller from weight training. In fact most tend to see a slight increase over time!

Weight training properly executed with sufficient intensity, adequate rest and nutrition will bring about an increase in muscle size of any part of the body that is being worked.  This holds true whether it be it the pectoralis muscles of the chest (or pecs as many call them) or the muscles of your arms and legs. The way that this process (hypertrophy) works is that individual muscle fibers will get bigger (slightly bigger, that is, you won’t see mountains of muscle sprout on a woman without the use of anabolic steroids as it takes men with ten times more testosterone, years upon years to develop a muscular physique) or they will split and then get slightly bigger. The fibers of your pectoral muscles are all constituents of skeletal muscle whereas breast tissue is made up of sex specific adipose tissue (fat), ligaments, connective tissue and mammary glands. There are no skeletal muscle fibers found in the breasts as they simply sit directly over the pectoralis muscles. Weight training therefore can have no direct effect on them whatsoever.

Weight Training Doesn’t Affect Breasts Just The Muscles Underneath

Breast tissue is not affected by weight training
Breast schematic diagram (adult human female cross section) – Legend: 1. Chest wall 2. Pectoralis muscles 3. Lobules 4. Nipple 5. Areola 6. Duct 7. Fatty tissue 8. Skin. Image courtesy Patrick J. Lynch, medical illustrator

Thus breast tissue cannot be subject to hypertrophy or get larger due to weight training, but by increasing the size (slightly, ladies) of the pectoral muscles under the breasts there will be a natural increase in overall chest size. It may then appear that the breasts look a bit larger as they will stand up a bit more, which, is something most women would not mind. However the actual size and composition of the breasts themselves will not change. A study conducted in the University of Arizona back in 1985 confirmed this phenomenon in a 21 day study that used concentric and eccentric contractions with a specialized chest exercise machine. After the three week program researchers found no changes whatsoever in the size, shape or volume of the breasts of the women participating after extensive scientific measurement.

So what about those flat chested women in the magazines with thickly developed chest muscles and no breasts? The ones that are so often parodied and ridiculed? Firstly it should be noted that the female bodybuilders that we typically see in magazines or on the internet use extensive amounts of  drugs to attain a degree of muscular development and body fat reduction that is not in any way possible without pharmaceutical intervention.  These athletes do not in any way represent what a regular woman would look like if they trained with weights, no matter how long or how hard they trained.  The size and shape of breasts in a healthy woman is fairly resistant to change as long as there are normal conditions of hydration and food availability. That being said, in cases of extreme under nutrition or calorie restriction as is often the case for athletes trying to get lean or individuals with eating disorders like bulimia or anorexia where there is a significant reduction of body-weight and body fat, the breasts, which have a high proportion of fat, will shrink. In the case of female bodybuilders- you see the dense muscle tissue in their chest area and no breasts and the assumption is erroneously made that somehow the weight training made their breasts go away. Weight training has nothing to do with it, as shrinkage comes from the reduction in body fat and nothing else.

Weight Training Can Help You Look Better All Round!

Weight training does not reduce breast tissue in women
Weight training does not reduce breast tissue in women but it can help them increase muscle mass and reduce body fat.

That being said, natural athletes who don’t aspire to have 3% body fat levels don’t tend to have the same flat chested look as their drug using counterparts, nor the thickly muscled pecs that many find a bit off putting. Due to the reduced body fat of the average elite athlete there is some reduction in breast sized as compared to the general population, as they diet down, but most of the size lost in their chest area comes back when they eat normally and reduce their levels of fat burning activity. The other factor that can cause breast size to change is obesity- in which case the breasts become larger as body fat increases past healthy levels. Some women who are overweight see this increase in breast size as a positive attribute and are reluctant to exercise or diet for fear of reducing their bust size. For someone who is overweight to trim down to a lean and toned body, there will always be some loss of breast size- from the loss of body fat. But keep in mind that weight training can help lift what remains and make you look better all round!

High Intensity Bodyweight Training: Ballistic Pushups & Dips!

This was a tough one!

Starts out with ballistic push ups (like clap pushups but without the clap as my wrist is still not 100%) nonstop for 20 reps, then all out on dips for 10 reps.

To say it was painful would be an understatement, but you just have to push through and keep on going.

Still training, hope you are too and as always, Excelsior!!! #naturallyintense

#hometraining #homeworkout #homeworkout #highintensitytraining #naturalbodybuilder #naturalbodybuilding #fitover40 #naturalbodybuildingvideos #chestday #chesttraining #naturalbodybuildingtips #pushups #dips #bodyweighttraining #highintensitytrainingtips #drugfreebodybuilding #calesthenics
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Kevin's Unconventional Biceps Training- 3-6 Minutes a Week!

In this video I go over my biceps training using the Naturally Intense High Intensity Training protocols that helped me go from having arms measuring 11.5 to 12 inches to 18 inches drug free!

It's an unconventional approach for certain, but it's one that's helped my arms grow and the hundreds of men and women I have trained over the past 30 plus years.

Now, my success isn't due to being genetically gifted, as it took me the better part of 11 years to get my arms up to those measurements.

Which is significant as it works and been been proven time and time again to work for the average man or woman trying to grow their arms without drugs.

It's my hope that these high intensity training protocols can help you as much as they helped me!

Click on my bio link to see the full video on my YouTube channel and thanks as always for taking the time to look at my work!!! Excelsior!!! #naturallyintense

#highintensitytraining #naturalbodybuilder #naturalbodybuilding #fitover40 #naturalbodybuildingvideos #armworkout #bicepsworkout #naturalbodybuildingtips #biceps #armtraining #highintensitytrainingtips #drugfreebodybuilding #barbellcurls
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At the Lancaster Classic Day 2 Elimination Rounds Against European Champion, and World Record Holder Leo Pettersen @leo_barebow_archer

I don't talk much about it but I'm also a competitive barebow archer (surprise!) and last Saturday I had the honor of making it to Day 2 at the Lancaster Archery Classic in the Barebow Division, as I made the top 64 out of 267 competitors and had a chance to shoot with some of the greatest barebow shooters on the planet!

I didn't make it past Leo, but it was a real rush to be there and a huge thanks to my coach, Joe MyGlyn @prolinearchery for helping me get there.

Thanks as well to my good friend @sean_chan33 for all of his help from the very start, to my line buddy Aaron Shea for taking the shot and showing up to support!

My thanks as well to rob_kaufhold for putting on and promoting one of the best archery tournaments on earth!

Thanks also to to everyone who took the time to send a supporting word and I am looking forward to next year!!! #naturallyintense #barebow

#lancasterclassic #lancasterarcheryclassic2024 #lancasterarchery #archery #fitover40 #barebowrecurve #targetarchery
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Dumbo, Brooklyn circa 2004

This shot was taken as part of the promotion for my Naturally Intense DVD and was about a year after my last bodybuilding competition.

It was a grueling photoshoot.

We started at about 10 am and finished around 4pm and I was completely spent, but the more we shot the sharper I looked, so we kept on going.

It's nice to look back from time to time and as tired as I was, we all had a blast!

My thanks to @stephanie_corne_artwork, @https://pulse.ly/itgnag2dec and @ftaz1 for taking the shots!!!

Thanks for watching and as always, Excelsior!!! #naturallyintense

#naturalbodybuilder #naturalbodybuilding #throwback #fifthavenuegym #5thavenuegym #drugfreebodybuilding #naturalbodybuildinglifestyle #gymlife #gymmotivation #naturalbodybuildingmotivation #bodybuilding #blackandwhite #instablackandwhite #bnw
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Can You Build An Impressive Physique Training Only At Home?

Absolutely!

I stopped training in commercial gyms as of March 2020 and have been training at home ever since.

Initially I was admittedly worried that I might lose some of my gains or not make as much progress, but that certainly wasn't the case.

I've consistently continued to improve with my high intensity workouts and muscles have no idea where they are training.

As long as the criteria of adequate intensity and overload are met, there will be an adaptive response and your muscles will get bigger and stronger.

So don't worry at all about where you train, focus instead of what will be the best way for you to always be training!

Thanks for watching and as always, Excelsior!!! #naturallyintense
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Kevin's Three Day Training Spilt!

For the past 33 years I have trained three times a week with Naturally Intense High Intensity Training workouts lasting 10, 15 to 20 minutes max.

It's a training split tried and testes not only in it's helping me realize my goal of becoming a successful natural bodybuilder, but it's also helped hundreds of men and women over the past three decades.

I have tested just about every possible training split imaginable and for this particular style of high intensity training, this particular grouping consistently yields fantastic results.

I hope it helps you as much as it's helped me over the years and thanks so much for taking the time to look at my work.

Keep training hard and Excelsior!!! #naturallyintense

Excelsior!!! #naturallyintense

#trainingsplit #3daytrainingsplit #threedaytrainingsplit #naturalbodybuilding #naturalbodybuilder #naturalbodybuildingvideo #naturalbodybuildingmotivation #naturalbodybuildingtips #drugfreebodybuilding #bodybuilding #highintensitytraining #highintensitytrainingtips
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405 Stiff Leg Deadlift for 7 Reps! High Intensity Training.

First leg workout of the year and already pushing it!

I haven't done a stiff leg deadlift over 315lbs for about 3 years at this point, and I did my last set with 315lbs and comfortably got to 10 reps and decided I had far too much gas left in the tank and that I should go up in weight.

So I did.

I figured I might get a solid 6 reps in, but I made it to 7 and I think I could have gone on to get a full 10 reps BUT that's when good judgement prevailed.

As a bodybuilder having not trained this heavy for so many years, the shock of this much weight would be more than enough to stimulate muscle growth, and doing more reps wouldn't yield any greater returns, only increase the likelihood of injury.

It's not about the numbers, it's about training to a point where you achieve your goal, and it's important to have a goal in mind as a bodybuilder based on increasing muscle mass rather than hitting a particular number.

Besides, if in my 20's I never did more than 405lbs on a stiff leg deadlift, it doesn't make any sense going heavier than when I am almost 50!

Could I deadlift more at this point?

Absolutely but just because you can doesn't mean you should!

So keep those weights in a good working range, keep it safe and as always Excelsior!!! #naturallyintense

#hometraining #homeworkout #homeworkout #roguerack #highintensitytraining #naturalbodybuilder #naturalbodybuilding #fitover40 #naturalbodybuildingvideos #backworkout #naturalbodybuildingtips #backtraining #highintensitytrainingtips #drugfreebodybuilding #fitoverforty #deadlift
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Turning 50 in a few months...

Not much of a big deal for me as I still feel pretty much the same but I hope that my example helps show what can be done with a lifetime commitment to eating well and training consistently!

Thanks for coming along on the journey and as always, Excelsior!!! #naturallyintense

#naturalbodybuilder #naturalbodybuilding #healthylifestyle #fitover40 #drugfreebodybuilding #naturalbodybuildingmotivation #natty #fitness
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Featured everywhere from the Wall Street Journal to CBS News, Kevin Richardson’s Naturally Intense High Intensity Training have helped hundreds lose weight and transform their bodies with his 10 Minute Workouts. One of the top natural bodybuilders of his time, Kevin is also the international fitness consultant for UNICEF and one of the most sought after personal trainers in New York City. 

Related Articles:

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How Do Muscles Get Bigger & Stronger

Kevin Richardson
Kevin Richardsonhttps://www.naturallyintense.net
Featured everywhere from the Wall Street Journal to CBS News, celebrity Personal Trainer NYC and with over 2.6 million readers of his blog, Kevin Richardson is the creator of Naturally Intense High Intensity Training, one of the top lifetime drug free bodybuilders of his time, the first International Fitness & Nutrition Consultant for UNICEF, 2020 and 8 Time Winner of the Best of Manhattan Awards for Personal Training and a world recognized authority on high intensity training. Kevin has helped thousands, from celebrities to CEO's over the past 30 years achieve their fitness goals with his 10 minute high-intensity workouts done just three times a week in conjunction with his holistic nutrition approach. You can learn more about about his diet and training services at www.naturallyintense.net
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