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Our Staff

Get to know our friendly Fitness Together® Personal Training Staff at Portsmouth.

Sean Stellmach
Sean Stellmach

Sean Stellmach

Owner/Fitness Coach

Sean Stellmach began his career as a fitness coach at a Fitness Together near his home in Massachusetts. Having entered the field with a bachelor’s degree in community health education from UMass Lowell, and a NASM (National Academy of Sports Medicine) personal training certification, Sean was excited to work with clients and help them achieve results. He was immediately comfortable in the training studio and truly enjoyed coaching clients in their fitness journeys.

After just one year, Sean came upon the opportunity to purchase Fitness Together Newburyport where he quickly increased business and churned local interest in his new studio. He compiled a highly qualified team of fitness coaches and witnessed many client success stories, and continues to do so today. Fitness Together Portsmouth was acquired by Sean in early 2012. This studio was built much like the Newburyport location, and is now a premier personal training establishment in the greater Portsmouth area.

Sean believes that fitness can and should be fun AND effective. Much of his free time in the summer/fall is coaching the Amesbury High girls’ varsity soccer team. But he and his fitness team understand that sometimes, exercise takes a back seat in life, and it’s difficult to begin any fitness program. His goal is to motivate, empower and improve the overall health of each and every client who walks through his doors.

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Keith Dorr
Keith Dorr

Keith Dorr

Fitness Coach

Keith has lived in Maine his entire life. He grew up in a small town named South Berwick, which is often mistaken for "Marshwood" because of the very popular high school within the town. He has been active his whole life and heavily involved in sports. Baseball was his main sport throughout high school, but recently he has started playing for a semi-pro football team, the seacoast war hawks out of Dover, New Hampshire.

His journey into personal training has a couple of key factors that led to the fitness training career choice. Between cardiovascular health risks running in the family, and the passion and drive to help people create better lives for themselves, fitness training was the healthiest and the most logical. When it all comes down to it, it’s about being able to help people reach their goals and hopefully affect people in a positive way day after day.

Keith received his certification through the All Pro Sports and Fitness Association and is CPR/AED certified through the American Red Cross association.

Fun Facts: Pitched at Hadlock field for baseball

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Anna Wadiak
Anna Wadiak

Anna Wadiak

Fitness Coach

Anna grew up in a small town in Northwestern NJ. She got into fitness by using online resources like YouTube to do exercise videos and learn new routines. In doing so, she discovered her love for fitness and health as a way to decrease stress and grow stronger and more confident.

She headed up to Massachusetts after high school and graduated UMass Amherst with a B.S. in Public Health and a B.A. in Communication. There, she began teaching group fitness classes at the Campus Recreation Center and studied on the side to get her certifications in Personal Training, Group Fitness and others.

After college, Anna began work as the Healthy Living Director at the Greater Boston YMCA where she got even more experience training and teaching while also learning how to manage a department and contribute to public health initiatives and chronic disease prevention.

She recently relocated to lovely New Hampshire and joined the Fitness Together family. She believes that fitness should be enjoyable and lift people up — working out is always better with a smile and positive attitude. She hopes to have a long, fulfilling career pursuing her passion to support others in finding their own strength, confidence and love of health and wellness.

Sierra Luce
Sierra Luce

Sierra Luce

Fitness Coach

Sierra grew up in Woodstock, Vermont.She has been very involved in sports and outdoor activity throughout her life such as snowboarding, hiking and playing lacrosse as well as ice hockey.

Despite being active she still had her own weight struggle. Going into her Freshman year of college she made the decision to become more serious about her fitness to get ready for her first season as a college athlete. She was able to lose 50 pounds by the following spring. Through that weight loss she then found her passion for fitness and creating a better quality of life.

Sierra received her Bachelors of Science in Exercise Science in 2016, and her certification from National Academy of Sports Medicine in 2018.

Her goal is to help you meet your goals and find your inner strength through fitness. She believes that exercise is the best medicine and loves to educated people on how to implement it into their everyday life.

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Annie-Claire Dunnigan
Annie-Claire Dunnigan

Annie-Claire Dunnigan

Fitness Coach

Annie-Claire grew up in Québec, Canada and move to the United States in the spring of 2020. She graduated at Sherbrooke University with a B. Sc. In Kinesiology in 2012 and a Specialized higher study diploma in 2014.

She worked several years as an outdoor fitness group trainer with a variety of clients and has experience working with elderly people in a context of using physical activity as health prevention and autonomy enablement. In the past 4 years, she worked as a specialist in psychomotricity with preschool-age children.

She has always loved playing sports like soccer, tennis, volleyball, basketball and climbing. Her real passion happens in the outdoor where she can enjoy mountain biking, snowboarding, cross-country skiing and surfing.

She believes that if practiced with consistency, some very simple life habits can make a big difference in someone’s quality of life. You will hear her telling you that there is no such thing as too small an effort, everything counts.

Hannah Stellmach
Hannah Stellmach

Hannah Stellmach

Fitness Coach

Hannah has been a manager and fitness coach at Fitness Together Newburyport since 2010. She has a true passion for fitness which developed in her early years, especially as a cross country runner at Newburyport High school and in college. She attended both Keene and Salem State universities, where she studied communication and exercise science.

Hannah moved to Tucson, AZ after graduating college, where she worked as a chiropractic assistant. This experience allowed her interest and knowledge in the health/wellness field to flourish. Pursuing her fitness career more seriously a few years later, she attended the National Personal Training Institute in Waltham, MA. Her first fitness coaching position was at Fitness Together, and the rest is history.

Realizing the delicate balance between exercise, keeping it fun, and reaching goals, Hannah continues to strive towards becoming the best fitness coach she can. Although she has many management duties, her favorite time is spent training clients. Hannah’s confidence as a fitness coach arises from the many client successes she’s been a part of. With the right mind set, commitment, and hard work, anything is possible!

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