About Us


Our mission is to build an environment where people can push towards their personal goals with the value of coaching at a reasonable price. We have a true passion to help people get stronger both physically and mentally. It is our aim to have every client that walks through our door fall in love with training and the process of bettering themselves because we know that the lessons you learn in the gym will carry over into every facet of your life.

Dylan best personal trainer in waltham

Dylan Gutheil


Dylan grew up in Brookline, Massachusetts. Passionate about sports since childhood, Dylan played football and rugby in high school and continued his rugby career at Springfield College, where he earned a degree in Exercise Science. After college, he dedicated himself to the field of strength and conditioning. Since he retired from rugby, he has competed in powerlifting locally and at the national level. Dylan started personal training right out of college for 5 years until he got frustrated with the corporate training environment and decided there was a better way to deliver coaching that could have a bigger impact on more people’s lives. In 2016 his former college classmate and rugby co-captain, Jared and him decided to open Flight Performance and Fitness. Dylan has over ten years of coaching experience along with extensive expertise in the science of human movement, exercise physiology, sports nutrition, and biomechanics. Dylan’s main drive is to build flight to the best possible training facility it can be so it can help more people reach their personal goals and potential.

Jared Collinson


Jared was born and raised in Sandwich, Massachusetts and gives credit to a young passion of fitness to advancing his career in sports and submerging him into the field of strength & conditioning. Jared had a long career in rugby where he won two national championships, played in many international competitions, and played professionally in Major League Rugby. Jared worked as the head strength and conditioning coach for the New England Free jacks of Major League Rugby in their first 3 seasons along with opening Flight Performance and Fitness with Dylan in 2016.

Coleman Jackson


Coleman grew up in Brookline, Massachusetts. He loved playing sports growing up including baseball, soccer, and football. In high school he discovered rugby and weightlifting which initially sparked his interest in strength and conditioning. Coleman is a 3rd year at Northeastern University pursuing a degree in Health Sciences with plans to pursue a doctorate in physical therapy after graduation. He loves working with people from all different backgrounds and can’t wait to help you achieve your goals.

Preston Yong

Preston grew up in Newton playing baseball and volleyball. At 26 he’s an experienced coach having coached volleyball since the age of 17. Preston has been coaching SMASH Volleyball Club’s 13U team which is the top team in New England. Specializing in youth development he also ran the 14U boys program for 3 years. Preston is also Head coach for girls’ varsity at Newton Country Day School and an assistant coach at Lasell University. He also played semi-pro for Boston Bounce of the Volleyball League of America last year. Preston started lifting with Flight Performance & Fitness from day 1 when he was 19. He fell in love with training and since 2020, he has been helping clients reach their goals just like Flight helped him reach his goals these past 7 years.

Dan Stone


Dan grew up in Potsdam, NY. A sports lover from the youngest age, he found passion in athletics of various kinds. Through high school he played soccer, basketball, golf, and was a sprinter and thrower in track and field. Spending his first three years of undergrad at Stonehill college, he ran on the track team as a short distance sprinter, and picked up rugby in the fall of his sophomore year. After his junior year, he transferred to the University of Notre Dame, where he put his focus into playing rugby at the highest level. After obtaining a degree in Environmental Engineering, he decided to pursue his passions in rugby and performance in Colorado, where he played for the Vail Men’s club, Denver Barbarians, and professionally for the Colorado XOs in 2021. Dan specializes in athletic development, and high performance habit building. Outside of Flight, Dan has also been an assistant coach for the Harvard Men's Rugby team for the last two years. Dan is passionate and committed to helping you achieve life changing goals through knowledgeable and experienced coaching, programming, and holistic support.


Bryce grew up in Greenwich, NY. Where he started his fitness journey playing football, basketball, and lacrosse from a young age. Battling with injuries, Bryce pursued a degree in kinesiology while continuing his collegiate lacrosse career at New England College. Finding himself wanting more, this led him transferring to Lasell University switching to a degree in exercise science. While in college, Bryce Coached men’s lacrosse at his high school Alma mater as well as running summer lacrosse programs from ages 10-20. With Bryce’s unique background, he’s prepared to help you with your fitness, recovery, and nutrition goals.


Maria grew up in Richmond, Virginia. She played basketball through high school and continued playing all four years during college. She holds a Master of Exercise Science & Wellness and has been coaching since 2015 with over eight years of experience. Maria interned and coached at various gyms before joining Flight Performance and Fitness. She is very passionate about helping you achieve your goals and being a better individual overall.


Everett was born and raised in Pendleton, OR. Growing up, he played several sports including football, soccer, basketball, baseball, and track and field. While in High School, Everett found a love for the weight room, as he recognized strength and conditioning as a tool to elevate his level of play. After High School, Everett attended Eastern Oregon University. While at EOU, Everett played for the football team, starting for four years on the offensive line. After graduating from EOU in 2023 with a degree in Health and Human Performance, Everett moved from Oregon to Massachusetts to live with his Fiance and pursue a career in Strength and Conditioning. Everett is passionate about helping clients reach their full potential, as well as contributing to a strong and healthy community.



Shiela grew up in Burlington, Vermont. She struggled with sports until the ladder part of high school when she started going to the gym before classes and found confidence moving her body which transferred onto the soccer field and tennis court. Sheila started college as a D3 player for both before transferring to Boston. Sheila taught at various gyms before doing her Strength and Conditioning internship at Flight. Along with coaching small groups at flight, she also trains 1:1 clients full time. Sheila is extremely passionate about helping people feel their best through exercise and nutrition.

Shane Dempsey


Shane grew up in Fairfield, Connecticut where he was an avid sports player/outdoors child. Every season was dedicated to a sport, and if there wasn’t a sport to be played there was a trail ride to be done or a tree somewhere to climb. In high school Shane played football, wrestling and rugby and while he has since stopped the first two has not figured out when to hang the rugby boots up. He continued playing rugby at a high level at University of Arizona, as well as in San Diego, and Australia. Through these travels and experiences, he became fascinated with the world of human peak performance from both a physical and mental standpoint. Shane takes this infatuation with human performance to his clients where he strives to make them the best possible version of themselves.

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