Instructors

Get to know the Staff

Leslie Dondarski

Owner of GlassDoor Fitness, Licensed Massage Therapist, Certified Pilates Instructor who is passionate about living a fit and healthy lifestyle in body, mind and spirit. I love teaching Pilates but am just as happy teaching Cardio Strength, Absolute Core classes or teaching one on one. Working with my clients and helping them to achieve and maintain their goals is a top priority. When my clients make progress it brings me joy. Incorporating massage and bodywork into their lifestyle helps me to share my nurturing spirit.

Alyssia Saporito

In 2011, Alyssia enrolled into a 200 hour Yoga Certification Training through the Yoga Loft of Bethlehem to become an instructor. Since then, she has expanded her knowledge of movement with trainings in TRX, Self- Myofascial Release, Mobility, Somatic Flexibility, Core Strength Vinyasa, Restorative Yoga, and Chair Vinyasa. With over a decade of teaching experience, Alyssia creatively crafts sessions that can be adapted to all bodies and levels of practice to help strengthen and open physically while building mindfulness. Her classes focus on connecting movement with breath along with a strong emphasis on anatomy and alignment. She has seen the positive benefits that consistent and well- rounded movement have brought to her own life & health and is honored to be able to offer the same experience to others

Michele Lepore

Generating and maintaining optimum health has been a passion of Michele’s since her college days. Michele’s earned a Bachelor of Science degree in Community Health from Montclair State University in NJ. In addition, she obtained her teaching certificate in Health Education and a Master's degree in Teaching. Her professional career was being employed as a Health teacher by two different public schools in NJ. Her exercise history for the past several decades has been at local gyms. First, at the now defunct Xercise in Chester, NJ and then for the past 12 years she has been a member at the Gold's Gym in Flanders, NJ. Her skills as a personal trainer include Svetness, Crunch Fitness, and Glassdoor FItness. Please join her on your journey to elevate your health to new levels!

Sarah Jacobs

Sarah is a fitness enthusiast. As a former co- owner of a Wellness space, Sarah recognizes that fitness isn't a destination, and isn't based solely on physical exercise. It is a mindset, a community, and a method of self-care. The wellness journey is unique to each person and Sarah looks to connect with each person where they are each time they walk through the studio doors. Sarah focuses on form, anatomy, and pushing personal boundaries in her classes. She teaches with an encouraging, educational vibe centered on safe movement and progression. Sarah's classes include TRX with a strength- based flair, and Spinning, where the movement flows from the music. (Playlist requests entertained!)

Shanna Heverly

Shanna is excited to be teaching one of her all time favorite workouts at GlassDoor Fitness. Barre has been a massive part of her life. First, as a supplemental training method for her professional dance career and then as a side career for past twelve years while performing in NYC. Shanna’s passion for dance lead her to a 15 year professional career in ballet companies, Broadway national tours and television. Along with teaching fitness, she is also a dance instructor at various studios in NJ and is passionate about training the next generation of dancers to be healthy in mind, body and spirit. She is excited to bring this passion to clients of GlassDoor as well!

Brian Dondarski

Brian is a Certified NASM Personal Trainer with a passion for fitness and living a healthy lifestyle. He has expertise in Injury Prevention. He believes in a comprehensive approach to fitness balancing proper nutrition and using valuable techniques that minimize the risk of injury and maximize physical potential. Working with and engaging with his clients keeping them motivated to reach their goals is a prime focus of Brian’s approach to his wellness training. With a love of the outdoors Brian enjoys golfing, hiking, skiing and gardening. An avid foodie he likes to experiment in the kitchen trying out new recipes or creating one of his own. Brian is available for personal training sessions by appointment. .

linda Nussbaum

Instructor