Elizabeth Tretter (also known as @sweatalittleglitter ) is a mom, group fitness instructor, personal trainer and running coach in New York City.

Her Instagram page was born when Elizabeth was a busy mom of 3 with a career in Intellectual Property Law. As an avid runner and a marathoner, Elizabeth always prioritized fitness and wellness. She started her Instagram page in hopes to inspire others to do the same. As her online community grew, and after working for 19 years in Intellectual Property Law, she decided to dedicate herself to fitness full time.

Currently, Elizabeth is an instructor with Equinox gyms, a resident trainer/instructor at Casa Cipriani, and has her private in-person personal training business. Elizabeth is a passionate runner who completed all of the world major marathons. She loves to travel and explore different countries through running races. She is an avid skier and surfer.

When not training, teaching, running or working with clients, Elizabeth loves being at home with her three kids Stella, Lola and Reese and her husband Robb.

Available Services

Two women practicing yoga in a room with a white bookshelf-patterned wall, one woman on a yoga mat and both in a side plank pose with elevated arms.

Personal Training Session

A group fitness class with women exercising in a studio, led by a woman in black sportswear giving instructions. The participants are doing leg exercises with resistance bands around their thighs.

Group Fitness Class

A fitness instructor shows an exercise to a group of women participating in a workout class in a dimly lit gym or studio with bottles and workout equipment on the floor.

Events & Retreats

Learn more about Services

Taught signature Beauty Pageant Bootcamp for the Mrs. New York 2020, currently Mrs. United States

Taught strength classes at Amansala, Tulum as a part of the yoga retreat led by Halle Becker

Taught Power Break Bootcamp and Athletic Stretch corporate classes for Norton Rose Fulbright a Global Law Firm

Taught Strength for Runners for Adidas Runners NYC

A woman with short, curly blonde hair smiling and sitting in front of a bookshelf filled with white books. She is wearing a black sports bra, gray leggings, and white sneakers, with various jewelry and a smartwatch.
Four women in casual and athletic clothing standing together inside a clothing store, smiling at the camera.
Two women standing together in a clothing store, smiling, with racks of clothes behind them.
Two women practicing yoga in a room with a white bookshelf wall. One woman is in a side plank with her left arm raised, and the other woman is in a similar pose with her right arm raised. They are on yoga mats, wearing athletic clothes and sneakers.
Three women hugging and smiling inside a clothing store, with racks of clothes in the background.
A woman with curly blonde hair wearing a headset and a black sleeveless top, giving a high five to another woman, in a dimly lit indoor setting with other people in the background.
Woman speaking in front of a ring light with a camera, wearing athletic attire.
Two women at an indoor location, one in the foreground smiling and the second in the background taking a photo with her phone, with a dark interior and artwork on the wall.