What Actually Happens When Your Breasts Bounce

You start running.

Your feet go forward.

Your arms swing back and forth.

And your boobs?

They have apparently booked their own itinerary.

Up. Down. Sideways. Around. Possibly into another postal code.

If you have bigger breasts, you already know that exercising without enough support isn’t merely uncomfortable. It can feel like two unruly passengers have escaped their seatbelts and are now bouncing around the cabin.

But there’s actually some fascinating science happening inside those bouncing boobs.

And after more than 25 years of fitting women into sports bras, I can tell you this:

Boobs move WAY more than most women realize.

So grab your girls. Preferably with both hands if you’re currently braless. We’re talking boob physics.

🧬 First: Your Boobs Don’t Have Muscles

This surprises a lot of women.

There are muscles underneath your breasts, but your breasts themselves are primarily made up of fat, glandular tissue and connective tissue.

Which means you cannot simply do a few chest presses and train your boobs to stay put.

Wouldn't that be convenient?

Three sets of 12 and suddenly the girls are standing at attention again.

Sadly, no.

Breasts rely partly on connective tissues, including structures commonly called Cooper’s ligaments, along with the surrounding skin and internal connective tissue, to help maintain their shape and structure.

And those tissues are not a built-in sports bra.

🏃‍♀️ Your Boobs Don't Just Bounce Up and Down

This is where things get interesting.

When we picture breast bounce, we usually imagine:

⬆️ Up
⬇️ Down
⬆️ Up
⬇️ Down

If only boobs were that organized.

Research into breast biomechanics has shown that breasts can move in multiple directions during exercise, including vertically, side-to-side and forward and backward.

Basically, while you're running toward the finish line, your boobs may be trying to complete a three-dimensional interpretive dance.

And the more breast tissue you're carrying, the more noticeable and uncomfortable that movement can become.

Welcome to the Boobstacle Course.

🍈🍈 Bigger Boobs = Bigger Physics Problem

Women with larger breasts don't need a scientific study to tell them breast movement can hurt.

We've lived it.

Running.

Jumping jacks.

Burpees.

Tennis.

Pickleball.

That unexpected little jog across the parking lot because you forgot something in the car.

Sometimes you take three steps and immediately think:

NOPE.

Research has found that breast movement during exercise can contribute to breast discomfort and pain, and that effective breast support can reduce movement and improve comfort.

This is why high-impact support becomes especially important for women with larger breasts.

Because gravity has been working the same shift since puberty, and apparently she never takes a holiday.

😳 But Will Bouncing Make My Boobs Sag?

Here's where we need to separate boob fact from boob folklore.

Breasts naturally change throughout our lives.

Age, genetics, pregnancy, breastfeeding, weight fluctuations, hormones, menopause, skin elasticity and plain old gravity can all affect breast shape.

So I wouldn't tell you:

"If your boobs bounce, you're going to make them sag."

That's far too simplistic.

What I will tell you is that excessive breast movement can be uncomfortable, distracting and sometimes downright painful.

And if you're exercising regularly, there's absolutely no prize for making your breast tissue do unnecessary laps around your chest.

Support the girls.

They've been through enough.

🏀 Compression vs. Encapsulation: Yes, There Is a Difference

Sports bras generally control breast movement in a couple of different ways.

Compression bras press the breasts closer to the chest to reduce movement.

You know the concept:

EVERYBODY GET IN THE CAR. WE'RE LEAVING.

Then there are encapsulation styles, which support each breast more individually.

And many high-support sports bras combine elements of both.

For larger breasts, that combination can be incredibly effective because you're controlling movement from multiple directions rather than simply squishing everything together and hoping for the best.

Because hope is lovely.

Hope is not a support system.

🚨 The Bra Has to Fit Properly

This is the part women often miss.

You can buy the most technically advanced sports bra on the planet, but if it's the wrong size, it can't do its job properly.

The band is especially important because it provides a significant amount of the bra's support.

If the band is riding up your back, the straps are doing all the heavy lifting or your breasts are spilling out somewhere they weren't invited...

Houston, we have a boobie problem.

Your sports bra should feel snug and secure without preventing you from breathing comfortably.

Your breasts should be contained.

Your band should stay in place.

And when you jump?

Your boobs should not arrive three seconds after the rest of you.

🎾 And Yes, Pickleball Boobs Are a Thing

I am 61.

I'm a pickleball addict.

And I'm a double D.

So when I talk about breast support during sports, this isn't coming from someone sitting quietly behind a desk contemplating Cooper's ligaments.

These boobs have court time.

Pickleball might not look like running a marathon, but you're constantly stopping, starting, reaching, lunging and changing direction.

And when you're carrying larger breasts, you notice very quickly when your sports bra isn't doing its job.

I've been selling and fitting sports bras for more than 25 years, but I'm also the woman wearing them while chasing a pickleball around a court.

I know what good support feels like.

And I DEFINITELY know what bad support feels like.

💕 The Bottom Line: Your Boobs Shouldn't Stop You From Moving

This is the part that matters most to me.

Women should not avoid running, pickleball, tennis, fitness classes or any activity they love because their breasts hurt when they move.

And you shouldn't have to hold your boobs while running.

We've all done it.

But ladies...

Your hands have other jobs.

A properly fitted sports bra can dramatically reduce breast movement and make exercise much more comfortable.

So if your boobs are bouncing, escaping, rubbing, chafing, spilling or generally behaving like they've been released into the wild...

I can help.

I've spent more than 27 years helping women find sports bras that actually fit their bodies and their activities.

And as a 61-year-old, double-D, pickleball-addicted woman myself, I don't just sell support.

I require industrial quantities of it.

🍈🍈 Less bounce. More movement. Happier boobs.

That's what we're here for.

Brigitte

Email me: brigitte@sportsbras.ca

Text me: 1-403-270-4250

The Bra Boss of Canada
SPORTSBRAS.CA
Less Bounce For Your Buck™