- Certified Personal Trainer, American College of Sports Medicine (ACSM)
- Certified Personal Trainer, YMCA Health and Fitness
- Certified Pilates Instructor, Pilates PhysicalMind Institute
- Bachelor of Arts, Communications/Theater, University of New Hampshire

Althea has been working in the health and fitness industry since 1990. Her knowledge, energy and contagious enthusiasm have always made her one of the most popular class instructors.  Her specialty: Pilates.  In addition to teaching and training here at the club, she has also designed and conducted numerous instructor certification programs.  As the founder and former owner of Defy Gravity Pilates, she has been profiled on KPIX, KGO and 7x7 Magazine.

Althea has extensive experience in physical rehabilitation, and truly looks forward to seeing her clients fully recover from past injuries and then achieve new levels of fitness. By focusing on how the body and mind functions as an integrated unit, postural weaknesses may be strengthened, functional movement may be restored and mental agility may endure. 

Althea's motto: “Stay flexible.”

- Certified Personal Trainer, National Personal Training Institue (NPTI)
- Certified Personal Trainer, National Academy of Sports Medicine (NASM)
- Certified Group Fitness Instructor, Aerobics and Fitness Association of America (AFAA)
- Bachelor of Arts, Communications, California State Univeristy - Long Beach

- Certified Personal Trainer, National Strength and Conditioning Association (NSCA)
- Bachelor of Science, Marketing and Economics

David has always led an active life with a background in competitive gymnastics and professional ballet. Along with being an NSCA certified personal trainer, David also earned a diploma and certification from the National Personal Training Institute. He is also an ISMA certified pilates instructor and sports nutrition consultant.

David’s passion lies in training and motivating people to meet and exceed their fitness goals, pushing themselves to the limit and being completely psyched and proud of what their bodies can do. Whatever someone’s current fitness level is or is not doesn’t matter to David. "Just come in for a workout, give your best effort, and have a blast."

- Certified Personal Trainer, National Personal Training Institute (NPTI)
- Certified Personal Trainer, National Academy Sports Medicine (NASM), January 2009
- Certified Mat Pilates Teacher, Body In Flow Pilates

Glen is dedicated to helping you realize your potential through health and fitness. No matter what your fitness goals may be, or your current health status, he will tailor a program to meet your needs. His priority is to achieve results in a safe and fun environment, while empowering you to take control of your own health. He specializes in weight loss, muscle hypertrophy, sports specific training, core stabilization, and the correction of muscle imbalances which result from daily activities.

Glen uses his enthusiasm for fitness to teach early morning boot camps and to inspire young athletes at local high schools. He has an extensive background working with professional fighters and world class athletes. Of course, nutrition is a vital aspect of any fitness program, and after a career as a 5-star chef, Glen also will assist you in creating a nutritional plan.

He believes, "While making health a priority, you can experience true happiness in life."

- Certified Personal Trainer, National Personal Training Institute (NPTI)
- Certified Group Fitness Instructor, Aerobics and Fitness Association of America (AFAA)
- Certified Mat Pilates Teacher, Body In Flow Pilates
- Bachelor of Science, Child Development and Psychology, Cal Poly State University - San Luis Obispo

Jenny has been teaching the 5th grade for six years. At the same time, she has always been interested in leading a healthy lifestyle through eating right and exercise. She was inspired to further this passion by becoming a personal trainer. Dedicated to helping people realize and reach their fitness goals, she enjoys working collaboratively to create individualized plans to meet the needs of all people.

Jenny will motivate you through a functional training workout to increase endurance, build strength, and correct muscle imbalances. She is committed to expanding her knowledge in fitness and incorporating new and better techniques into your workouts.

- Certified Personal Trainer, National Personal Training Institute (NPTI)
- Certified Group Fitness Instructor, Aerobics and Fitness Association of America (AFAA)
- Certified Mat Pilates Teacher, Body In Flow Pilates
- Bachelor of Arts, Cultural Anthropology and Studio Art, Wheaton College, MA

Laura is committed to promoting a healthy and active lifestyle. That includes a balance between training hard, working hard, eating right and remembering to relax and enjoy life every day. She has extensive experience in sports conditioning and training. She was an All American on the Wheaton College Field Hockey team, and is the Coach of the San Francisco University High School Field Hockey team.

Laura is certified in mat pilates, she teaches outdoor boot camps, and is an avid biker and runner. Her sports background lends itself to her intense and efficient training style. She will safely guide you through functional training methods coupled with plyometrics and pilates. She will motivate and excite you into transforming your body and improving your health. Laura believes, "It is important to have fun while getting fit. What's the point if you can't enjoy it?"

- Certified Personal Trainer, American Council on Exercise (ACE)
- Bachelor of Science, Psychology, University of Victoria, Canada
- Extensive experience with rehabilitative physical therapy
- Specialist in work-related ergonimics

Leo has over 8 years of experience as a personal trainer, physical therapy aide and ergonomics consultant in the Bay Area. He believes that mind and body should be integrated in the experience of working out. When you leave the club, you should feel physically invigorated and mentally focused.

He strives to create individualized programs and has a background in yoga-based exercises, rehabilitation and core stabilization.

- Certified Personal Trainer, National Personal Training Institue (NPTI)
- Certified Personal Trainer, National Academy of Sports Medicine (NASM),
- Certified Group Fitness Instructor, Aerobics and Fitness Association of America (AFAA)
- Russian Kettlebell Certified Level 1 (RKC I)

Leslie's passion and excitement for health and fitness is extremely contagious. Born in Hawaii, she has spent her life bouncing between Oahu, Northern California, Aspen, Michigan, Manhattan, and Italy before happily settling down in San Francisco. She earned her BA in classical voice from the Manhattan School of Music. Along with music, weight management, health, and fitness have always been a focus of her energies. She thrives in motivating and inspiring people with an enthusiastic push to help her clients achieve their fitness goals.

Leslie is certified by the National Personal Training Institute as well as in Spin and Mat Pilates. She also teaches an early morning Boot Camp - rise and shine! Her training style incorporates functional and practical methods with high energy circuit training and an emphasis on core stability. She is not afraid to push you to your limits in a safe and fun manner.

- Certified Personal Trainer, National Personal Training Institue (NPTI)
- Certified Mat Pilates Teacher, Body In Flow Pilates
- High Blue Belt, Tenth Planet Jiu Jitsu Systems

Although active as a child, Steve experienced weight fluctuation in his adolescent years. As early as junior high, he experimented with different diets without any real understanding of weight control. He tried many fad diets and drifted back and forth between an active life in the gym to living the bartender's lifestyle, filled with late night fast food, endless supply if beer and smoke-filled rooms. By the time he was 30 years old, he was 240 lbs and getting winded after one flight of stairs.

Then he started studying to become a personal trainer and educating himself. Sinc then, he has totally revamped his body, become an avid bicycle rider, learned indoor rock climbing, ran the SF marathon in a dare and, for the last four years, dedicated much of his time to studying mixed martial arts. In fighters training, he distinguished himself as the guy who has strength, agility and endless energy, which gave him the opportunity to train with some of the Bay Area's top fighters.

"My goal is to take your body and make it perform at a higher level. When that is the focus, strength, fat loss and all other health benefits will follow."

- Certified Strength and Conditioning Specialist, National Strength and Conditioning Association (NSCA)
- Russian Kettlebell Certified Level 1
- Bachelor of Arts, Philosophy, University of Chicago

Stevo is a committed fitness nerd. Born in Georgia, Stevo went to school for Philosophy and worked as a wine salesman and sommelier to put his lovely wife through law school. By the time they moved to San Francisco in 2006, he was very overweight and completely sedentary. But in March of 2008, he decided not to live like that anymore and lost 60 lbs. in 292 days before running the Las Vegas Marathon. Never content, Stevo then pursued his dream of becoming an officer in the United States Marine Corps. For 14 months he trained other officer candidates and fell in love with motivating people to meet their fitness goals. Based on his "Keep it Simple, Stupid" approach to training, dozens of those candidates achieved the level of fitness necessary to become Marine Officers. Stevo became the only candidate in Northern California history to achieve perfect scores on both the Physical and Combat Fitness Test. And while he was never selected for military service, it was this experience that drew him into a passion for the science of fitness.

Stevo has lived at every level of physical conditioning and knows first hand what it takes to get off the couch and make serious life changes. His specialty is ordinary people with big fitness goals or those who just want to be excited to use their bodies again. High on results and low on frills, his fitness philosophy is "simple, but never easy."

- Certified Personal Trainer, American Council of Exercise (ACE)
- Extensive experience with rehabilitation
- Student of reflexology and massage as methods to alleviate pain and discomfort associated with ailments ranging from muscle pain to internal organ dysfunction.