Pam Bither
Pam Bither
AFAA - Certified Personal Trainer
Certified Kettlebell Certified
CPR / AED Certified
Certified Nutritionist
- Competitive Marathon Runner
- Running Coach & Companion
- Former Body Builder
- 18 Years of Experience in the Fitness Field

'I live what I teach: I believe that exercise should relieve stress - not create it. My clients' individual needs and desires are always part of my holistic approach to nurture body, mind and spirit.'

'I know the importance of good physical and mental health as I keep up with the challenges of an active 3 and 5 year old, a household and my career.'
Jen Lawrence
Jen Lawrence
APEX - Certified Personal Trainer / Nutrition Certified
Kettle Bell Concepts Level 1
BA Psychology with Concentration in Exercise Physiology
NASM Sponsored - Certified Kettle Bell Instructor
IDEA - Health and Fitness Organization Member
- 20+ Years Experience in the Fitness Field
- Personal Trainer for Over 12 Years
- BA Psychology with Concentration in Exercise Physiology
- IDEA - Health and Fitness Organization Member
- Played Intercollegiate Field Hockey
- Bodybuilding, Biking, Running & Hiking Enthusiast

'My philosophy has evolved through my years as a trainer. I do what I do because I know that health and fitness enhance our quality of life to an extent that can be life-changing. My clients' goals, abilities and personalities - along with the difficulty in balancing the demands of their lives - are important factors in designing a well thought out program that meets their needs. Meeting that challenge is what I find very rewarding.'
Jason Beattie
Jason Beattie
Bosu Certified
Stretch Certified
ISCA - Kickboxing Certified
CPR / AED Certified
- BS Athletic Training - Concentration in Rehabilitation and Injury Prevention, University of Southern Maine.
- 8+ Years in the Fitness Field
- Established Successful World Gym Bootcamp Program Offering Multiple Classes/Week.
- Former Fitness Instructor for Collegiate Men's / Women's Basketball and Hockey Programs.
- Flag Football, Volleyball, Golf, Basketball, Mountain Climbing Enthusiast

'I am going to push you harder than you will ever push yourself with an emphasis on proper form. From week to week, I will set up an individualized plan based on your goals that will include key concepts such as muscle confusion, strength training and cardiovascular training.'

'And my Boot Camp Class? There are others out there - often mislabeled. Designed with the intensity of conditioning new recruits, my program should make the military proud!'
Stephanie Beattie
Stephanie Beattie
Partner Assisted Stretch
Body Pump
- BA in Sports Medicine with concentration in Health Fitness
- 10 Years Experience in the Fitness Field
- Head Girls Track and Field Coach at Bonny Eagle High School: 'Coach of the Year 2011'
- Formerly employed as Personal Training Director and General Manager of Bally Total Fitness
- Competitive Runner & Hiking / Skiing Enthusiast

'I am passionate about making a difference in other people's lives by showing them how great they can feel by living an active, fit and healthy lifestyle.'
Mike Seltzer
Mike Seltzer
NASM - Certified Personal Trainer
NASM - Performance Enhancement Specialist
NASM - Corrective Exercise Specialist
- Assistant Coach, Falmouth High School Boys' Basketball
- Maine Firecrackers AAU Coach (6th Grade Team); Program's Strength & Conditioning Coach
- Skill Instructor for Net Gains Basketball Training
- Former Assistant Coach, USM Men's Basketball (2008-2011)
- Played Basketball for Division 2 Saint Anselm College; Class of 2002
- 7 Years Experience in the Fitness Field
- Acceleratedperformancetraining.com

'Mike Seltzer is a fantastic performance coach. My daughters work with Mike to improve their strength and agility as well as help them prevent injury. Mike's program has advanced our two daughters' speed, strength, balance and overall fitness. They have gotten more powerful and faster on the basketball court. Mike has a vast understanding of body mechanics, muscle function and his capability of customizing workouts for his clients makes him a terrific performance coach. In addition, he is professional, trustworthy, conscientious, and the kind of person you want as an influence on young athletes.' - Brian and Carolyn Clement
Stephanie Walsh
Stephanie Walsh
NASM Certified Personal Trainer
Certified Spin Instructor
TRX Suspension Training Instructor
Kettlebell Instructor
Professional Background:
Certified Personal Trainer, National Association of Sports Medicine
Training Strengths in Circuit Training, Functional Movements, Core Strength, Muscular Endurance
Competed in Half-Marathons, Marathon, Bike Tour and Sprint Triathlon for charities
Strength and cardio conditioning, biking, hiking, backpacking, snowshoeing, snowboarding enthusiast
Certifications in Kettlebell Instruction and Spin® Instruction
TRX Suspension Training® Instructor

Personal Quote:
“I like to take a very individualized approach with my clients. I don’t stop at creating workouts to build their current fitness level. I am also mindful of their daily life needs, recreational activities, and goals for the future, whether it be preparing for a competition or climbing stairs without getting winded. I believe everyone has the potential to do great things, work hard, and smile at their accomplishments!”
“I constantly cycle my clients through different phases of training. This will increase flexibility/ balance/ core/ strength, force the body to continuously adapt, avoid plateaus, and keep the workouts fun and interesting.”
David Cruz
David Cruz
ACE - Certified Personal Trainer
AAPT - Fitness Training Diploma
ISCA - Kickboxing Instructor
Certified Beach Body Coach
CPR / AED Certified
- Extensive Boxing & Wrestling Background
- Established Popular World Gym 'Boxercise' Program
- Basketball & Football Enthusiast
- Cruztraining.com
- Facebook.com/cruztraining

'I will help you fight your way to a better body and a stronger you.'

'My mission is to enhance the lives and personal well being of others, through proper training and motivation.'

'One of my greatest strengths is my ability to work with people so that WE are comfortable working together. Communication, developing a comfortable working relationship, and trust are important to developing a successful health and fitness program. I maintain a 'can-do' and upbeat attitude and work hard to develop programs to help you achieve your fitness needs and goals.'
Chris Goulet
Chris Goulet
ACE - Lifestyle and Weight Management Consultant
ACE - Certified Personal Trainer
Empower Fitness Kickboxing
CPR / AED Certified
- 15+ Years in the Fitness Field
- BS Sports Medicine (with Honors), University of Southern Maine
- 12+ Years as a Certified Personal Trainer, American Council on Exercise
- Certified Lifestyle and Weight Management Coach, American Council
- IDEA - Health and Fitness Association Member
- Bodybuilding, Power lifting, Basketball and Running Enthusiast
- Published Writer for bodybuilding.com

'My goal is to improve the overall health and quality of life of all my clients through education, positive lifestyle change and challenging people to achieve physical accomplishments they never dreamed possible.'

'The first step I take in motivating clients is practicing what I preach and leading by example.'
Ryan Thomson
Ryan Thomson
NASM - Certified Personal Trainer
Certified Kettlebell Instructor
AHA CPR Certified Instructor
TRX Suspension Instructor
- Portland Firefighter / Emergency Medical Technician
- AHA CPR Instructor
- Training Strengths in Circuit Training, Core Strength, Muscular Endurance, Explosive Power and Conditioning
- Mainefunctionalfitness.com

'A proud firefighter, my other passion is Personal Training. I specialize in functional movements promoting muscular strength, flexibility, conditioning and coordination.'

'I constantly find new ways to push you to the next level. There's no need to be intimidated, as I always train you within your abilities, using easy-to-follow instruction. Through expertise gained by extensive research, seminars and certifications, I will design a fitness program to meet your specific goals and lifestyle. My knowledge in kettlebell instruction will facilitate a fast-paced program guaranteed to promote excellent gains.'
Tess Nappi
Tess Nappi
AFAA - Certified Personal Trainer
Post Rehab & Injury Prevention
Strength & Condition
CPR / AED Certified
- 25+ Years Experience in the Fitness Field; Current on all Cutting-Edge Training and Wellness Techniques & Styles.
- Focus on Nutritional Fundamentals with Extensive Knowledge of Gluten-Free and Diabetic Diets.
- Training Emphasis on Midlife, Prenatal and Postnatal Fitness
- Core, Agility and Neuromuscular Training for Better Body Function & Stability.
- Member of CAPS (Consumers Advancing Patient Safety)
- Member of Advisory Board for Barbara Bush Children's Hospital
- Strong Community Supporter Participating in Fundraising Athletic Events
- Member of Garden Club at Lyman Moore Middle School

'Your success is my passion. Whether your goal is weight loss, general fitness, overall wellness or competitive edge, I will help you meet - and exceed - your expectations.'
Zack Davies
Zack Davies
NSCA - Certified Trainer
CPR / AED Certified
- BS in Sports Medicine, University of Southern Maine
- 8 Years Experience in the Fitness Field Across Many Settings
- Certified by the National Strength and Conditioning Association
- Functional Movement Screen Certification
- USA Weightlifting Level 1 Certified
- IFPA Pro Bodybuilder 2010
- Formerly employed by varied Sports Performance Facilities including Sports Club LA in Boston

'I believe that each program should cater specifically to the individual because each person has different goals and objectives. Fitness progression requires the key components of strength/mobility/stability and overload. Peak progression, however, is only achieved through proper form and this is where I place my emphasis. I believe that thoroughly educating my clients through the five components of fitness is the backbone of my training success.'
4:00 AM - 11:00 PM
4:00 AM - 9:00 PM
6:00 AM - 8:00 PM
265 Marginal Way
Portland, ME 04101
Phone: 207-828-9900
Follow  World  Gym