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YOU: Lean. Fit. Strong. Just 30 Minutes, Twice a Week.

Hannah Slater

Hannah Slater

Hannah got her first taste of SlowBurn training during the Fall of 2015 as a client, and immediately wanted more. She is an avid believer in the SlowBurn methodology, having learned that her strength training goals, and more, can be achieved in significantly less time compared to traditional fitness programs. Hannah has a BA from Smith College, and a Master in Public Health focused on Health Policy and Law from Boston University. As a certified personal trainer by the National Academy of Sports Medicine (NASM), Hannah is passionate about helping people become the strongest and healthiest versions of themselves. She lives a life dedicated to fitness and health, and loves bringing her wisdom and experience to clients. Hannah enjoys working with all ages and has a particular interest in helping seniors reach their goals.


Leigh Hansen, Massage Therapist

Founder of Remedy Massage, Leigh has been helping her clients reduce stress and release muscular tension for the last 15 years. She received a BA in Dance from NYU in 1991 and performed and taught for several years. In 1997, she became a certified Gyrotonics instructor and began training clients while pursuing graduate studies in both dance and pre-med. Leigh received her Massage Therapy degree from the Swedish Institute in 2002 and opened her private practice that same year. An avid fan of the SlowBurn system, Leigh is grateful to the trainers at SlowBurn for helping her stay strong!

Jane Bernhard

Jane Bernhard

Jane is certified personal trainer through the American Council of Exercise. Growing up as an competitive soccer player, she has always been focused on fitness. After spending years teaching group fitness (aqua-cycling, paddle board yoga, P90X) she came upon the Slowburn method and loves how it produces faster results in a shorter amount of time. She has a BFA from Boston Conservatory and is passionate about helping people achieve their health and fitness goals.

George Ruthauser

George Ruthauser

George is a certified personal trainer through the National Academy of Sports Medicine and holds an MBA from Fairleigh Dickinson University. He has been dedicated to his personal fitness goals for over a decade. He believes that almost anything is attainable if you take a positive and reasonable approach.

Prior to launching his career as an exercise instructor, George had a 30-year tenure as Vice President of Sales at GRM Document Management, a global document management company that works with a wide variety of industries. Before that, he was a Vice President, Management Supervisor at Grey Advertising, overseeing strategic campaigns for major brands such as Kool-Aid and Red Lobster.

A lifelong lover of the arts, George has also written several plays — five of which have been produced in one-act festivals in New York City. He lives in Cedar Grove, NJ with his wife and daughter.

Our Montclair Team

Tommy Day, Instructor

As a lifelong athlete (NCAA football, track and field, gymnastics) and as a trainer since 1991 (SFPA certified), I have had the opportunity to experience many different training techniques. For best results, my standard workout usually hovered around two to three hours (weights, cardio, stretch, shower), four times a week. If I did any less I felt I would be short-changing myself. Boy, was I wrong. I get the same results doing SlowBurn™ as I did before, and I don't have to organize my life around my workout! I love what SlowBurn™ does for my body and I love seeing what it does for our clients.


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Rosanne Guararra

Rosanne Guararra

Rosanne found her way to SlowBurn Montclair in 2014 while getting bagels next door and never left. An avid yoga enthusiast, Rosanne is a trained yoga instructor (200 RYT) and has taught at South Mountain Yoga and Yoga Mechanics and has been a guest instructor at Lululemon at Garden State Plaza.

Rosanne is a passionate and dedicated instructor in the SlowBurn method and her objective is getting her clients strong her while keeping them safe. Rosanne enjoys working with all her clients, but especially enjoys working with her grade, middle and high school kids and helping them reach their goals as she has worked in children’s publishing for many years before making the switch to the health and fitness industry.

Originally a native New Yorker, Rosanne lives in Montclair, in a book and art-packed apartment with her high school-aged daughter and three cats who love to watch TV.

Contact Information

NYC Location
169 West 78th Street
New York, NY 10024

[email protected]

Montclair, NJ Location
25 Watchung Plaza
Montclair, NJ 07042

[email protected]

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