Beth Johnson, Owner of Energy Within has been teaching fitness for over 30years. She is  STOTT Pilates certified, Gyrotonic certified, ACE group exercise, TRX and Cycling certified. Recently certified by Titleist Performance Institute (TPI) as a Golf Fitness Trainer. She believes exercise is the fountain of youth…just keep moving! Her husband Karl helps her with the business and teaches cycling.

Marian Gaskell is available for private Pilates instruction on the Reformer, Cadillac, Chair and Barrels. She is STOTT certified and has been teaching for 10 years. Marian believes in fitness for life and that exercise is as vital to health and well-being as eating and sleeping. Marian is married to Allen and has a son, Paul.

Sarah McCormack teaches Cycle/Yoga, Conditioning Plus and Dry-Land Conditioning for Youth Sports . She holds numerous fitness certifications. Sarah likes to blend all of her studies together with her personal life experiences to create  fun, challenging and unique classes. She lives in Marblehead with husband Dave and their four children. 

Larry "Link" Russell, teaches Cycle and Cycle/TRX. He has multiple certifications including: a Black Belt in karate, PADI dive master, USA Cycling Coach Level 3, TRX Certified, Heart Zones Certified Trainer, and is a Certified Personal Trainer. He lives in Marblehead with his wife Jackie and their dog Tucker. 

Lisa Gillis brings a lifetime of active and healthy living and over 25 years of fitness and dance instruction and personal training experience to ENERGYWITHIN.

Lisa’s athletic discipline started at a young age. Lisa was a competitive gymnast and soccer player and studied ballet, tap, and jazz. She began her career in the fitness industry shortly after graduating from Simmons College in Boston, where she earned a Bachelor of Arts degree in Management, Marketing, and Art. She teaches Conditioning, Barre and TRX. A few summer’s ago, Lisa was the Aerobics Advisor on the set of Grown Ups 2. Lisa is certified in ACE Group Exercise, TRX, SCW Small Group Training, Bender Barre Method, SCW Personal Training and Kathy G’s Tread Tabata  

 When Lisa isn’t teaching or in the gym, you can find her with her husband, Bill, watching their sons Liam and Aidan play football, lacrosse, or hockey or walking her dog Rudy with her daughter Kailey. 



Rosemary Dejoy teaches Conditioning Plus. She is AFAA certified as well as TRX and Cycleops. Rosemary has been teaching since 1991. She loves to learn new fitness programs and adapt them for different clientele. She lives in Swampscott with her husband Tom and has three children.

Lisa Garry Seymour is a National Strength and Conditioning Association (NSCA) certified personal trainer who works one on one  and with small groups on functional strength training, Pilates, weight loss, and sport specific conditioning.  She has a B.S. in PE, holds multiple certifications, and has been in the health and fitness field for over 30 years.  Lisa has worked in Corporate Wellness and with the North Shore Medical Center's Heart and Wellness and Bariatric Surgery programs. Her special interest is helping people enjoy incorporating health and fitness into their busy lives. Lisa lives in Marblehead with her husband Will. In the winter she can be found on the cross country ski trails at Waterville Valley and in the spring, summer, and fall, on the water watching her daughter sail.

Gary Liberty, Pilates Trainer, Gary comes to Energy Within with 20 years of movement and teaching experience. After attending his first Pilates mat class he quickly realized that Pilates was the way forward to provide clients with safe exercise movements that translate into deep mindfulness of the body, builds strength, enhances mobility and alleviates pain and tension.

Alex Alexander has been a bodyworker since 1989. A chronic knee injury & back issues from a car accident introduced her to the many advantages of practicing pilates in 1999. Alex is an NASM personal trainer & a certified pilates trainer from ITT in San Francisco. She also became a gyrotonic trainer in 2014 which is a movement system that is incredibly effective & fun. 
Alex loves to teach about ways to reeducate and strengthen the body while creating flexibility.  Her mission is to assist clients to make lasting positive changes in their bodies so they may live full and active lives. When she is not at Energy Within you can find her practicing massage therapy at Integrative Muscular Therapy Center in Marblehead www.imtcmarblehead.com . In Alex's spare time she pursues acting on stage & in film. For more information check out her website... www.alignedbody.com.