Meet the Team


Owner, Head Coach

Marcus grew up in the San Francisco Bay Area. He played multiple sports as a child including soccer, baseball and golf, which eventually led to a collegiate career in soccer at the University of California, Berkeley. There he earned his degree in Molecular and Cell Biology with an emphasis in Nutrition and Physiology. After Berkeley he completed a year of graduate work at the Ohio State University School of Medicine.


His interest in both athletics and human health and performance eventually led him to CrossFit in 2007. He has gone on to compete at the CrossFit Games 6 times, three times as an individual (2016 12th fittest) and three times as a team member (2012 6th fittest team). Marcus is also the captain and member of the Phoenix Rise in the NPGL. For two years he has been voted to the all GRID league team, in 2016 earning 1st team honors, and in 2015 earning the award for leadership excellence.


Marcus has been a health and fitness coach since leaving Medical School in 2009. He was formerly a CrossFit facility owner for 5 years, has completed all 5 of the OPEX CCP courses, and has coached clients remotely from all over the world. He has coached athletes at the CrossFit Games as well as several Regionals athletes.


He lives with his wife Megan, and two daughters. He lists his parents, Barbara and Roy, as his role models and drive to succeed in life.


Honesty. Commitment. Persistence. Read more about Marcus’s story and how it all began.



Shanna Guzman swam for the Terrapin Swim Team in Concord as an age group swimmer and through high school. She went on to compete for Southern Methodist University and later transferred to University of San Diego and finished her college swimming. Post college she competed in olympic distance Triathlon, Master’s Swimming for The Olympic Club, and competed in marathons. As a Master’s swimmer she won a world Championship in the 200m Back in 2006 and multiple national titles from 2006-2012.  She also qualified and ran in the Boston Marathon in 2013. In 2016 she started her journey as a Master’s athlete in CrossFit.


Shanna’s background in coaching fitness stems back to 2004 when she first got her NASM Personal Trainer Certification. In Santa Cruz, she began coaching through personal training and group fitness classes at Optimal Health and Fitness.  At that time she coached age group swimming for Santa Cruz County Aquatics and Masters Swimming at Simpkins Swim Center. In 2010, she made her move to San Francisco and continued her personal training and coaching at Breakaway Performance. She soon came across the sport of fitness at TJs Gym in Mill Valley and had started to implement CrossFit for her own training in endurance sports. In 2012, she began her career as a coach in the sport of fitness. She continues to do personal training and individual program design for athletes that have a variety of goals, including competitive CrossFit. She is currently enrolled in the OPEX Coaches Certification Program where she gains new perspectives on program design, nutrition, and lifestyle.


Athletically, Shanna is currently being coached by Mike Lee of OPEX and is focused on developing herself to compete in the 40+ division of the CrossFit Games this year.


Brianna Lamb is a two time CrossFit Games Regionals Affiliate Competitor and former NCAA All-Conference Division 1 Rower. Brianna grew up in Marin County and began her athletic journey at a young age, playing basketball and swimming at a national level. She started rowing for Marin Rowing Association her junior year of high school and earned a full ride scholarship to row for the University of San Diego. She was an All-Conference Varsity 8+ rower for all four years, earning 3 Conference Championship titles and the first berth in NCAA Championships in school history, where they took 15th place in the nation. Brianna took 8th place in the NorCal Region of the 2017 CrossFit Open and competed in the Affiliate Division of the CrossFit Games Regionals in 2016 and 2017. Brianna is currently training for her first individual appearance in the CrossFit Games and is coached by Mike Lee, General Manager and Head of Coaching at OPEX. 


Through Brianna’s competitive journey, she developed a passion for supporting others in reaching their goals both in and out of the gym. In 2014, upon graduating from the USD, she began personal training and coaching group fitness classes at TJ’s Gym. In 2015, Brianna moved to Honolulu to compete for CrossFit 808. During this time, she expanded her own remote coaching business which included life coaching, nutritional guidance and program design. She is currently enrolled in the OPEX Coaches Certification Program and continues to coach both remotely and on-site at Revival Strength. 



OPEX CCP Candidate
CrossFit-Level 1 Trainer
CrossFit Weightlifting Coach
CrossFit Adaptive Coach
First Aid & AED


Anthony Mihelich enjoyed a variety of sports in his youth and began weight training in high school. Despite not being the strongest, fastest, or most athletic, it “clicked” that by putting in the right work, the results showed up — without question. This gave Anthony the confidence and drive to pursue further athletic challenges in high school and college, participating in football, lacrosse, and wrestling. Collegiate sports allowed Anthony to fine tune his athletic skill set such as proper mechanics and injury prevention. Eager to broaden his knowledge base, he began assisting a physical therapist in order to deepen his understanding of physiology and human anatomy.


After a few devastating knee injuries in high school and college resulting in multiple surgeries, Anthony was convinced he would never participate in competitive sports or even intense physical training ever again. He was then introduced to CrossFit in the spring of 2014 by a close friend, where he instantly wanted to join in the fun, but was initially concerned with the amount of volume after injury. To his surprise he felt instant relief after struggling with pain for years. He then understood experientially that, when performed properly, CrossFit could not only prevent injury, but also rehabilitate any and all injuries suffered outside and actually support your ability to function optimally in the real world.


During a period of travel in Southeast Asia, Anthony landed in Koh Tao, Thailand, where he began coaching part time in exchange for membership at a small CrossFit gym. Through helping grow the membership by creating a better client experience, Anthony discovered his love of being of service to others. Anthony wants to focus his complete attention on helping his clients achieve their goals through nutritional and lifestyle guidance and an emphasis on technique. He says, “Nothing is more satisfying to me than seeing an individual surpass their own thoughts of what is possible and becoming more physically and emotionally stronger than they have ever imagined.”


OPEX CCP Level 1 Coach (In Progress)
CrossFit Level 1 Trainer
CrossFit Level 2 Trainer
CrossFit Endurance Trainer w/ Brian McKenzie
CrossFit Mobility Trainer w/ Kelly Starrett
USA Weightlifting Certified
Yin Yoga Certified w/ Debi Daly
First AID & AED



Marketing Director, Partner

Satya has an extensive background in web development, online programs, and marketing, and has worked for Charles Schwab, Red Hat, and Nokia among others, forming her own freelance business in 2003. Seeking a way to combine work with her personal passion for fitness, she joined Revival Strength in 2016 to co-develop and market Awaken Training Series, and has evolved her role to support marketing, program development, and operations for Revival Strength as well as Functional Bodybuilding. Satya has two sons and holds a 4th degree black belt in kung fu.


Customer Support, Administrative Assistant

Bio coming soon.

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