Who We Are



Dan Dumas

Dublin, Sacramento, Fresno & Petaluma
Founder & Chief
Executive Officer

Annabelle Constantin

Dublin, Sacramento, Fresno & Petaluma
Founder & Chief Financial Officer

On June 3rd, 2005 Dan was hit by a wave while vacationing in Maui and broke his neck, leaving him with a C-5 incomplete spinal cord injury. He spent three months in the hospital after fusing his cervical vertebrae. Dan was told repeatedly that would never walk again, let alone move anything below his level of injury.

Dan and his wife, Annabelle, refused to believe this prognosis and began searching for alternative therapies for spinal cord injuries. One week after being discharged from the hospital they moved to Southern California to start an intense exercise-based recovery program. Dan began working out two hours a day five days a week. Dan saw tremendous progress within the first couple months and by the sixth month mark, Dan took his first steps in a walker. By the end of his program, Dan was no longer using a wheelchair, and walked with a walker or crutches full time.

Dan and Annabelle decided they wanted to create an opportunity for individuals with spinal cord injuries to participate in an aggressive therapy program without having to re-locate. Dan and Annabelle opened SCI-FIT Pleasanton in 2007 and have been in integral part of the business operations of the company. In 2014 a second location was opened in Sacramento making this program available to more people with neurological disorders in Northern California.

Lance Hansen
Dublin, Sacramento and Fresno Co-Founder, Vice President of Operations
Lance grew up in Palo Cedro, CA where he enjoyed the beautiful outdoors of Mount Shasta wake boarding, snow boarding, sking, camping, hunting and playing soccer.  In the summer of 2012 while at work he was injured and sustained a spinal cord injury at the chest level making him a T5/T6 incomplete paraplegic.  He spent three months in the hospital and was told time and time again he would probably never walk.  Refusing to accept this fate, Lance searched alternative therapies and found SCIFIT.  He fell instantly in love with the programming and for the first time saw hope in his recovery.  Lance has been devoted and dedicated to his workouts at SCIFIT for over 6 years.  He pushes himself everyday to continue improving and breaking past every boundary that he was told he would never be able to do.  Along with working out hard at SCIFIT Lance has taken part in two medical trials, Stem Cells in Switzerland and he has an epidural stimulator placed on his spine.

SCIFIT inspired Lance to help others in the same position. Lance has joined the SCIFIT team of co-founders in 2019.  He hopes to make this type of therapy available to all and never let anyone feel like they don’t have a chance for recovery.

Mike Terrell
Sacramento Co-Founder, Floor Manager, Neuro Exercise Therapist
Mike excelled in collegiate football and track and received All-Conference Honors for both sports. After graduation, he followed his passion for fitness as a sports performance coach. Throughout his career and education, Mike has worked with a myriad of athletes from different sports, ages, injuries, and backgrounds.

Mike’s vast background in fitness/wellness and coaching has proved to be invaluable at SCI-FIT. His creative and methodical training programs will cover all of your needs, from strength, endurance, mobility, as well as more technical aspects of learning movements. Mike’s coaching techniques will help you uncover strength you never thought you had.

Mike is a co-founder and Sports Performance Trainer at Prodigy Performance where he specializes in coaching young elite athletes. When Mike isn’t working with other athletes, he is training himself for body building competitions.

Education and Professional Training:

  • University of Minnesota, Morris: B.A. Sports Management
  • SCI-FIT Neuro Exercise Therapist Education Program
  • NSCA Certified Strength and Conditioning Specialist (CSCS)
  • Certified Massage Therapist
Kayla Robertson
Sacramento Co-Founder, Facility Manager, Neuro Exercise Therapist
Kayla has played sports all her life. She continued her Track and Field career at Springfield College, where she was awarded All New England and conference honors in multiple events. Kayla leaned about functional training as Strength and Conditioning intern at College of the Holy Cross (Worchester, MA) and the University of Rhode Island. After graduation, Kayla became a personal trainer at a privately owned gym where she worked with clients of all ages and abilities, both one-on-one and in a group setting. She relocated to California and continued her work in functional training and rehabilitation at SCI-FIT.

Kayla’s leadership qualities and work ethic quickly helped her obtain a management position. She has high expectations for herself and expects nothing less from her clients. Kayla believes that establishing a trusting relationship with the people she works with is the best way to push clients beyond what they thought was possible. Kayla’s comprehensive training program will cover all your needs while coming to SCI-FIT.

Education and Professional Training:

  • Springfield College (Mass.): B.S. Applied Exercise Science 2009
  • SCI-FIT Neuro Exercise Therapist Education Program
  • ACSM Certified Personal Trainer


Steve Nava   Fresno Co-Founder, Facility Manager, Neuro Exercise Therapist
Steve grew up passionate about sports, playing throughout high school and into his freshman year at Chico State.  While at Chico, Steve decided to channel his love for sports into coaching; majoring in Kinesiology with a minor in coaching. During his senior year in college, he had to opportunity to work as a strength coach for the soccer team.

After college, Steve began personal training and worked his way up to a managerial position at a fitness facility.  Steve’s dedication, openness to new techniques, and love of learning has helped him work with clients of all levels.   

Steve’s goal is to help clients improve every day.  Even through bad days, he finds ways to motivate his clients to achieve their maximum potential. 

Education and Professional Training:

  • Cal State University Chico: B.A. Kinesiology, Minor in coaching
  • SCI-FIT Neuro Exercise Therapist Education Program
  • TRX Certified
Tamara Link 
Dublin Facility Manager, Neuro Exercise Therapist
Tamara has been involved with sports and fitness since early childhood.  She went to Tiffin University in Ohio on scholarship for softball. During college she had an internship with a PT/OT clinic. She is currently playing competitive slow pitch softball and coaching 18 and under girls.  Tamara is not only training herself in strength and conditioning but her players as well.  Tamara’s passion is to work with people; challenge, motivate and support them through exercise which then filters into their lives.

At SCI-FIT Tamara guides and pushes her clients to achieve their individual goals.  She brings a charismatic smile and light to the atmosphere every day.

Education and Professional Training:

  • Tiffin University: B.S.Exericse Science
  • SCI-FIT Neuro Exercise Therapist Education Program
Devin Newsome  
Sacramento Floor Manager, Neuro Exercise Therapist
Devin has been involved with sports his entire life, which led to playing football at San Jose State University.  While in college, Devin worked as a personal trainer and a strength coach for a mixed martial arts team.

After college, Devin was a personal trainer and fitness manager before coming to work at SCI-FIT.  Through his years of personal training, he has worked with a very wide range of people and those experiences help him to make sure that he is helping to put together a program to get the most out of everyone that comes into SCI-FIT.

Education and Professional Training:

  • San Jose State University: B.S. Kinesiology
  • SCI-FIT Neuro Exercise Therapist Education Program
  • ACSM Certified Personal Trainer
  • Crossfit Level 1 Certified