OUR MISSION

To inspire joy, happiness and whole-body wellness and expression through
collective movement.

A space shaped by resilience, rhythm, and honest beginnings

Founder Sam Mostaccio built Common Language with relentless heart and creativity. While navigating fertility struggles, profound loss, and eventual motherhood, she shaped a method rooted in rhythm and informed by years of experience teaching Zumba, spin, Pilates, and Lagree across NYC’s most influential fitness studios.

What began in 2017 as sketches of colors, sounds, and movement evolved through living-room and garage sessions, blending musicality, sculpt, and strength. That early experimentation culminated in her first small Common Language studio inside Chicago’s Flatiron building in 2023, followed by the full Wicker Park space that opened in 2024.

Common Language is rooted in Sam’s passion for creating an inclusive space that will change the way we engage with ourselves and the world through movement, music, and sweat.

A graphic with the text '2011-2017' highlighted in green, and additional black handwritten-style text about an NYC global presenter for Zumba sponsored by Nike and creative director for various boutique studios.
Collage of three photos: top shows a group of women and children celebrating at a party, middle shows people doing aerobics or dance class, bottom shows a large group of people posing with their hands up at a fitness or dance event.
Person wearing a white satin nightgown standing barefoot, holding a small dumbbell in one hand, with one leg raised on a small trampoline indoor setting.
Text overlay stating '2017-2020' in pink, with additional notes about pregnancy at 29 weeks and designing clothes with colors, sounds, and movement, but the rest of the text is not clear.
A woman styling a young girl's hair indoors, with a closed book and papers on the table in front of the girl, and a green chair behind her.
A graphic with an orange banner showing '2020', and black handwritten text below that says 'started classes in living room & livestreaming'.
A collage of three images: the first shows a fitness room with trampolines and yoga mats; the second depicts a garage with exercise equipment and carpet tiles; the third features two people, a woman and a girl, painting a red wave pattern on a white garage door.
A pink neon outline of a cursive letter on a black background.
Text stating "2021-2023 hosted classes in my garage—during this time experienced two 2nd term misarranges back-to-back".
A pink banner with '2023' written on it, below that black text reads 'opened our studio space in the Flat Iron building'.
Text reading '2024 expanded the studio to double the size' with a yellow banner at the top.
Interior of a trampoline fitness studio with multiple small trampolines arranged throughout the room
Indoor trampoline fitness class room with trampolines, mirrors, and minimal decor.

Our Instructors

A woman in white athletic wear holding a weight plate behind her back, standing against a green background.

Samantha

Founder

Format Specialties

The Mix The Drip The Rhythym The Groove

Coaching Style

Magnetic Energy Motivational Sound-Driven Rhythm Inspired Challenging
Beginner Friendly Advanced

Samantha Mostaccio is a global presenter, Nike-sponsored athlete, and creative force behind Common Language. A lifelong mover — from teaching fitness in college to shaping NYC's boutique fitness scene — her classes blend rebounding cardio, sculpt, rhythm-driven sequences, and the musicality that defined her early Zumba career. Inspired by her daughter Aven and her own search for a vibrant postpartum workout, Samantha built a method rooted in lymphatic movement, community, and pure release. Her classes aim to help you move to the rhythm of who you truly are.

A woman wearing a white athletic top and white shorts standing outdoors near water, holding a bicycle handlebar with her left hand, with a city skyline in the background.
A woman outdoors holding gymnastic rings above her head, wearing a purple top and gray sweatpants, with a cloudy sky in the background.

ELLIE

Lead Instructor, Co-Founder of The Drip

Format Specialties

The Mix The Drip

Coaching Style

Strength Building Form-focused Grounding Highly Cued High Energy
Beginner Friendly Advanced

With a lifelong background in athletics, a degree in Kinesiology, and as a certified personal trainer, Ellie brings precision, strength, and confidence to every class. She’s helped shape the heart of Common Language — helping to co-create The Drip and blending powerful, athletic training with the rhythm and energy that define our studio. Grounded yet magnetic, Ellie creates an environment where every client feels challenged and supported. Her classes are bold, dynamic, and make you stronger from the inside out.

ELENI

Lead Instructor

Format Specialties

The Mix

Coaching Style

Contagious Energy Intentional Athletic Creative Sequencing Supportive
Beginner Friendly Advanced

Movement has always been Eleni's creative language — one that connects sound, rhythm, and emotion. A trilingual instructor with over eight years of experience across Rebounding, strength, cycling, and Lagree, she infuses every class with thoughtfulness and purpose. Eleni's energy and global perspective have helped transform Common Language into a space where creativity meets strength. Her signature format, The Mix, reflects her unique style: a seamless blend of sculpt, Rebound, and creativity. Expect music that moves you and sequences that inspire you.

Women exercising on mini trampolines in a fitness studio with mirrors and workout equipment.

ready to move to the rhythm?

Book a class