Who We Are

About Us

At Fitwall, we deliver the best fitness experience in the world.

Our plan is to become the first truly global studio fitness brand. We make fitness fun and effective. We use technology to inspire, guide, monitor and track progress. We have personality and express it creatively. Serious fitness need not be boring: it can be accessible, inviting, fun and life-changing.

Our team is comprised of fitness experts, brand builders, entrepreneurs, real estate legends, technologists and operations executives who have collectively built and grown dozens of successful businesses across a range of sectors.

Management Team

Josh Weinstein

Josh Weinstein is Fitwall's CEO and a founding board member. He is a brand builder and entrepreneur. Most recently, he founded and sold a solar development platform to a global solar developer. Josh started his career helping run the corporate synergy and special projects group at The Walt Disney Company, invested in and built companies at Brener International Group, worked in the Clinton White House and built a retail distribution platform for mobile content in Shanghai where he lived for 3 years. He's a graduate of Williams College.

Mike Webb

Michael D. Webb is President, Fitwall Studios, and serves as a member of the board. He is an operations expert who most recently founded a leading provider of real estate asset management services that was distinguished by its boutique approach to providing exceptional service driven by detailed analytics and reporting. Born and raised in Arizona into a cattle ranching family, Mike was taught from an early age that hard work and unfettered determination were the keys to success. Mike currently sits on the board of the California Coast Chapter of YPO (Young Presidents Organization) and the advisory board of the non-profit group Miocean.

Joe Bergeron

Joe Bergeron is Fitwall's Chief Technology Officer. He is a tech guru who keeps Fitwall's operations and technology on track. Joe is an accomplished technologist who was nominated by MIT for the Technology Review 100, an award recognizing "the 100 most remarkable technology innovators under 35." He's directed the team of software architects that have created the platform that makes Fitwall's data-driven workout so powerful and unique. He's a graduate of Williams College with degrees in Economics and Computer Science.

Clifton Harski

Clifton Harski is Fitwall's Director of Training & National Head Coach. A lifelong athlete and collegiate basketball player, Clifton has been in the fitness industry for more than 8 years. He holds a degree in Kinesiology from SDSU. In just the last 3 years he has taught over 1,500 people while traveling the United States and conducting over 100 workshops covering different fitness systems for multiple companies, including his own. He is a student of human movement, and when introduced to Fitwall he immediately recognized the benefits people would have from this game-changing training system.

Amy Harski

Amy Harski is Fitwall's Manager of Special Projects. Amy was a competitive gymnast in her youth and was a collegiate pole vaulter. Amy had been working one-on-one with clients for 4 years before joining Fitwall. She holds a degree in psychology from Clairemont Mckenna College and has multiple fitness certifications from her time in the field. She enjoys outdoor activities, salsa dancing, and showing boys up at the gym.

Sheri Colosimo

Sheri Colosimo is Fitwall's Manager of Community. She leads an active, healthy lifestyle that inspires Fitwall athletes across the country. Prior to joining Fitwall, Sheri was with a nationally recognized yoga company where, as an early member of their team, she helped them grow from 2 to 80+ studios. During her career there, she helped create three Lifestyle Programs, opened the Chicago market and played an integral role in growing the San Diego market. She holds a degree in Exercise Science from the University of Dayton in Ohio.

Yoana Teran

Yoana Teran is Fitwall's Global Ambassador. She is a passionate Venezuelan native who has competed globally in a range of athletic pursuits. Yoana has been featured in both English and Spanish language media, is a published author, top fitness lecturer and instructor and expert in a variety of fitness modalities. After 20 years in the fitness industry, she is excited to bring her energy and focus to Fitwall, introducing athletes to the vertical training modality that changed her life and can change theirs, too.

Derek Barber

Derek Barber is Fitwall’s Director of Wellness and an advisor to the Training and Nutrition departments. He has extensive experience working with a variety of athletes and patients spanning rehabilitation to elite level performance. Derek leverages his multi-disciplinary knowledge base covering corrective exercise, natural/functional movement, athletics, and exercise and sport nutrition/nutritional therapy to create an unparalleled integrative health experience. He is passionate about creating innovative systems that enable people to actualize their potential for well-being.

Andy Carlson

Andy Carlson is Fitwall's Creative Director. With a diverse background in nearly all mediums of art and design, Andy brings a unique combination of expertise guiding the user experience and aesthetic of the Fitwall brand. He has worked as lead designer with major local brands in Portland, Oregon and recently founded the ESC Collective, a group of designers, artists, and engineers. He received his BSc in Web Design from Portland State University.

Peter Giese

Peter Giese is Fitwall's Director of Studio Technology. After graduating with a degree in Electrical Engineering from UCSB, he worked in Southern California as a telecommunications engineer. In 2008, he founded Soekan Design, a Portland and Los Angeles based web development company. He has served as lead programmer, marketing consultant, and project manager in the launch of over 100 websites in dozens of industries. Combining his background in technology and project management, Peter manages Fitwall Studio hardware and software operations.

Jon Horst

Jon Horst is a member of Fitwall's Athlete Relations team. He has worked at the intersection of business and athletics since graduating from NYU. Jon has served as an account executive with Anschutz Entertainment Group (AEG) and the New York Mets.

George Corbo

George Corbo is Fitwall's Director of Apparel. He has an extensive background in graphic design and has operated a successful fitness apparel and supply company. George is a competitive and accomplished athlete focused on pushing the boundaries of performance. He connects with Fitwall athletes online and beyond, sharing his personal training regimen and helping our athletes connect with one another.

Board of Directors

Ethan Penner

Ethan Penner is a founding Fitwall board member. He is a legendary finance and real estate investor. A visionary entrepreneur, he transformed the fields of real estate and finance while at the helm of Nomura Asset Capital/Capital America. Ethan is committed to health and wellness. When not training on Fitwall, he and his wife Marisol can be found hanging out with their 5 children.

Jake Silverstein

Jake Silverstein is a private investor and member of Fitwall's board. Jake's investments, through his firm E'lir Capital, focus on early-stage technology and consumer companies. Previously, Jake was the first employee of Prodea Systems, a connected-home technology company and a pioneer in the "Internet of Things," founded by Hamid and Anousheh Ansari. He holds an MBA from the University of Michigan, and received his BA in Mathematics at age 19. An avid reader and lifelong fitness enthusiast, Jake is a member of the X-Prize Foundation Vision Circle, and a board member of the William James Foundation and Mama Hope (mamahope.org).

Mike Webb

Michael D. Webb is President, Fitwall Studios, and serves as a member of the board. He is an operations expert who most recently founded a leading provider of real estate asset management services that was distinguished by its boutique approach to providing exceptional service driven by detailed analytics and reporting. Born and raised in Arizona into a cattle ranching family, Mike was taught from an early age that hard work and unfettered determination were the keys to success. Mike currently sits on the board of the California Coast Chapter of YPO (Young Presidents Organization) and the advisory board of the non-profit group Miocean.

Joshua Weinstein

Josh Weinstein is Fitwall's CEO and a founding board member. He is a brand builder and entrepreneur. Most recently, he founded and sold a solar development platform to a global solar developer. Josh started his career helping run the corporate synergy and special projects group at The Walt Disney Company, invested in and built companies at Brener International Group, worked in the Clinton White House and built a retail distribution platform for mobile content in Shanghai where he lived for 3 years. He's a graduate of Williams College.

Anthony Westreich

Anthony Westreich is a founding Fitwall board member. He is an entrepreneur and business builder with a track record of success in real estate and beyond. Currently, he controls six million square feet of prime real estate in the New York and Washington, DC areas, including the historic Helmsley Building at 230 Park Avenue. Anthony is passionate about fitness, training on Fitwall and working out daily with his two sons as often as possible.

Doug Brendle

Doug Brendle is the Inventor of the Fitwall and serves as a Board Observer. He is a student of the human body and recognized expert on athletic performance. Doug is a champion martial artist, has worked with hundreds of professional and Olympic athletes and the US armed forces focused on combat training. He has worked for more than 30 years designing cutting-edge and award-winning fitness equipment and protocols.

Corporate Advisory Board

Jeff Greenberg

Jeff Greenberg is a private investor based in Manhattan Beach, California. He has been involved with two active lifestyle brands that have reached billion dollar valuations (Skechers and LA Gear). Jeff was a member of the founding team at Skechers, has held a range of roles, including SVP Active Electronic Media and COO, and currently serves on the board of Skechers USA Inc. (NYSE: SKX). He also serves as a director of Househappy, Inc.

Dr. Michael Mantell

Dr. Michael Mantell, a behavioral science coach for personal and organizational excellence, earned his Ph.D. degree at the University of Pennsylvania after completing his M.S. degree in clinical psychology at the Hahnemann Medical College, where he wrote his thesis on the psychology of obesity. He is the Senior Fitness Consultant for Behavioral Sciences for the American Council on Exercise, as well as an author, media spokesperson and national speaker. Dr. Mantell has taught for the Equinox Fitness Training Institute, has served as Chief Psychologist of Children's Hospital and Health Center of San Diego and for the San Diego Police Department. He has been a member of the clinical faculty at UCSD's Department of Psychiatry.

Shantanu Talapatra

Shantanu Talapatra is an advisor to Fitwall. Shan was an early employee at Zynga and the co-inventor of several gaming-related patents. He is a technologist, marketer and social media guru who understands how to build community online. Shan is an active angel investor and co-founder of Showvine. He is a graduate of the Georgia Institute of Technology.

Cyrus Walker

Cyrus Walker is a marketing and sales guru who was born and raised in Washington, DC. Most recently, Cyrus sold the global insurance brokerage he founded to publicly-traded NFP, a distributor of financial services to the affluent and their mid-tier corporations, which was originally financed by Apollo Partners. He's a serious athlete and talented golfer who has found lifelong friends and business partners on golf courses across the globe. Cyrus is a graduate of Colorado College.

Joshua Zabar

Josh is an American entrepreneur, investor, advisor and thought leader in the health and wellness space. From 2010 to 2014 he was a Partner, Curator and on the Executive Committee at Summit, which is building a hub of culture, commerce, creativity, and thought leadership on a 10,000 acre parcel in Utah. Josh lives in Venice Beach, CA, arguably the global mecca for health-conscious individuals.

Francis Teran

Francis Teran is Fitwall's Special Advisor for Latin America. Ms. Teran is a renowned fitness professional and published author. She has served as a Vice Minister in the Venezuelan Cabinet focused on fitness and was the President of Instituto Nacional de Deportes (National Sports Institute). Francis was a producer and host of the daily television show “Cada Dia,” editor for “El Globo” and producer with Radio Caracas Television. She served as a professor of fitness in Chile and Venezuela, advised the national military academy in Venezuela and has trained world-class athletes for more than 20 years.

Athletic Advisory Board

Peter Park

Peter Park, owner of Platinum Fitness in California and co-author of Foundation: Redefine Your Core, Conquer Back Pain, and Move with Confidence, serves as a personal trainer for many professional and amateur athletes. Park has also competed in collegiate volleyball as well as being a pro-triathlete and ultra runner. Between 1990-1995 he took home two World's Toughest Triathlon titles and five top ten finishes in Ironman competitions. He holds three Catalina 50 mile championship course records in ultra running and three nine trails championship course records, also in ultra running.

Mike Fitch

Mike Fitch is the founder of The Global Bodyweight Training System including Animal Flow. He has over 13 years of experience as a fitness professional, including as a personal trainer and with extensive fitness management experience. His development in the fitness field includes a range of fitness disciplines, fusing together training styles such as Olympic lifts, kettle bell training, sports-specific and speed-agility training, and specialized training for post-rehab and corrective exercise clients.

Dallas Hartwig

Dallas Hartwig is the founder of Whole9, a community focused on health, fitness, balance and sanity, all built on a foundation of real food and healthy nutritional habits. He earned a BS in Anatomy and Physiology and an MS in Physical Therapy from Andrews University, and has been a licensed physical therapist since 2001. He co-owned and operated a strength and conditioning facility with his wife Melissa until founding Whole9 in November 2009. He is a Certified Sports Nutritionist through the International Society of Sports Nutrition and an RKC-certified kettlebell instructor.

Jamie Guined

Jamie Guined, MEd, MBA, CSCS, FMS is Exercise Scientist at NASA Johnson Space Center. Jamie currently serves as Exercise Scientist in the Neuroscience Laboratory's Motion Lab at the NASA Johnson Space Center. An active member of the spaceflight community and industry, Jamie also serves as the Exercise Science adviser to Mars One, CapCom for the Mars Society's Mars Desert Research Station, and as Business Development Officer for Astronauts4Hire. Prior to joining the Neuroscience Laboratory, she worked with the Exercise Physiology & Countermeasures Project where she conducted physiologic, medical, and human performance testing and research of International Space Station & Space Shuttle crewmembers.

Rudy Thomas

Rudy Thomas is a Head Coach with Fitwall. Most recently, Rudy was the Director of Athletic Performance at UC San Diego and prior to that served as the Assistant Strength & Conditioning Coach at Marquette University. Rudy holds a degree in exercise and sport science with a concentration in strength and conditioning from the University of Wisconsin-La Crosse and a masters' of science degree from Boise State in exercise physiology.

Marisol Teran Penner

Marisol Teran Penner is a member of Fitwall's founding team. She has a long track record in the athletic and fitness world, having achieved world-class status in both endurance sports as a professional triathlete and a cyclist as well as in strength sports as a champion bodybuilder and powerlifter. Marisol has also taught aerobics, competed as a synchronized swimmer, owned and managed gyms, been the trainer of many including numerous celebrities, and has many certifications including those from the Chek Institute as well as from Dragon Door as a Level 2 kettlebell instructor. Her sports career began very early as a student of Kyokushin karate beginning at the age of six. She was born in Caracas, Venezuela and has resided in Santiago, Chile as well before moving to the U.S. in 1992. She is devoted to living a fit and healthy life.