The Fitomics Team
2 physicians, 7 doctoral scientists, registered dietitians, and nurse practitioners — the people behind every exam, lab test, and coaching plan at Fitomics.
Multidisciplinary Excellence
Meet the Team
Led by a collective multidisciplinary team with advanced academic training, scientific research, and professional experience to facilitate an evidence-guided approach.
Leadership
Cody Haun
PhD, CSCS, ASN
Chief Executive & Science Officer
Cody holds a PhD in exercise physiology from Auburn University's Molecular & Applied Sciences Lab and an MA in sport physiology from East Tennessee State University. A former professor of exercise science and nutrition, Cody has authored more than 100 publications on skeletal muscle hypertrophy and metabolic health, cited over 2,800 times.
David Hardin
MD
Chief Medical Officer
David, a Fitomics co-founder, is a board-certified internal medicine physician trained at the University of Alabama School of Medicine, with a sports medicine fellowship at Lemak Sports Medicine and published Major League Soccer injury research in the American Journal of Sports Medicine.
Aaron Feld
MS, CSCS
Chief Operations Officer & Head Coach
Aaron led football strength and conditioning at Oregon, where the Ducks went 35-12 with two Pac-12 championships and a 2020 Rose Bowl win while training future first-round NFL picks Justin Herbert, Penei Sewell and Kayvon Thibodeaux, and then at Miami. Earlier, Aaron was on staff for Georgia's 2017 SEC championship and national title game run and worked under Nick Saban at Alabama. Aaron holds an MS in clinical exercise science from Mississippi State University.
Kerrily Murphy
MSN, CRNP
Director of Operations & Nurse Practitioner
Kerrily spent nearly a decade in emergency medicine as an emergency department nurse and nurse practitioner at hospitals in Birmingham and Montgomery. Kerrily holds an MSN from Troy University, is AANP board certified as a family nurse practitioner, and leads clinical operations at Fitomics.
Courtney Haun
PhD, MPH
Chief Administrative Officer
Courtney is an associate professor of medical sciences at High Point University, directing its Master of Healthcare Administration program, and holds a PhD in public administration and policy from Auburn University and an MPH from East Tennessee State University.
Scientists & Clinicians
Daniel Lawson
PhD, CSCS
Director of Fitness Operations
Daniel earned a PhD in health and human performance at Oklahoma State University and completed a postdoctoral fellowship at Auburn University's Warrior Research Center. Daniel has authored seven peer-reviewed papers, including in the Journal of Strength and Conditioning Research, and reviews for NSCA journals.
Jen Groban
BA, PN1
Director of Nutrition Operations
Jen directs nutrition operations at Fitomics, overseeing member check-ins and matching each member to the right level of nutrition care. Jen holds Precision Nutrition Level 1 and Functional Movement Screen Level 1 certifications.
Sammy Chatham
PhD(s), MA
Director of Research Labs Operations
Sammy is completing a PhD in kinesiology at The University of Alabama, researching exercise psychology, with three peer-reviewed papers including in the Journal of Anxiety Disorders. Sammy has run Fitomics lab operations since 2022.
Amy Horn
BSN, RN
Registered Nurse
Amy has been a registered nurse in Alabama since 2007 and supports the Fitomics clinical team with IV therapy, injections, sample collection and vital signs.
Sierra Calhoun
MHA
Healthcare Coordinator
Sierra coordinates member care at Fitomics and holds a Master of Health Administration, national certification as a phlebotomy technician, and an Alabama pharmacy technician registration.
Whitney Rivers
BS
Fitness Lab Lead & Coach
Whitney holds a BS in exercise science from Oklahoma State University and brings years of experience coaching individuals and leading group instruction. Whitney leads the Fitomics Fitness Lab and is a nationally certified phlebotomy technician.
Casey Metoyer
PhD, CSCS
Exercise & Sport Scientist
Casey earned a PhD in human performance at The University of Alabama and built athlete-monitoring data systems across all 26 varsity sports at Notre Dame, after coaching at UCLA and Alabama. Casey has published research on body composition assessment in journals including Medicine & Science in Sports & Exercise.
Kevin Carroll
PhD, CSCS
Exercise & Sport Scientist
Kevin earned a PhD in sport physiology and performance at East Tennessee State University and has published research on resistance training methods and muscle physiology.
Erik Bustillo
MS, RD, FISSN
Registered Dietitian
Erik is a registered dietitian and Fellow of the International Society of Sports Nutrition, serving on the ISSN board. Erik earned a BS in dietetics and nutrition from Florida International University and an MS in applied exercise science from Concordia University Chicago.
Katie Sibley
MS, RDN
Registered Dietitian
Katie is a registered dietitian nutritionist credentialed by the Commission on Dietetic Registration, providing specialist consultations for Fitomics members, including medical nutrition therapy for more complex nutrition needs.
Michelle Sadowitz
MS
Clinical Nutrition Specialist
Michelle holds a BA in athletic training and master's degrees in exercise science and clinical nutrition, and runs Meesh Moves, pairing training and nutrition expertise.
Christopher Jahraus
MD
Clinical Consultant
Christopher is a board-certified radiation oncologist and founder of Generations Radiotherapy & Oncology in Alabaster, with an MD from the University of Alabama School of Medicine, residency at the University of Kentucky, and fellowship in the American College of Radiation Oncology.
Christopher Vann
PhD
Scientific Advisor
Christopher earned a PhD at Auburn University and trained as an NIH-funded postdoctoral fellow at Duke University School of Medicine, studying exercise, epigenetics and aging. Christopher has co-authored more than 30 peer-reviewed papers and was head strength coach and sport scientist for USA Team Handball.