Serban Wellness and Fitness Team
The ONERO™ program is led by Clinical Supervisor - Deb Serban, Onero Licensee, MS CTRS, ACSM-CPT, a seasoned health and fitness professional with experience since 2008. In 2015, her work became more focused on aging and bone health through a partnership with UCSD’s Exercise and Physical Activity Resource Center (EPARC), contributing to clinical research on exercise for adults over 50.
Deb holds a B.S. in Therapeutic Recreation, an M.S. in Rehabilitation, and is an ACSM-certified Personal Trainer. As one of the first licensed ONERO™ practitioners on the West Coast, she integrates science-backed strategies into every session.
Debbie Serban
Our Team
Kristin Maxwell
Kristin Maxwell
Kristin Maxwell
Kristin Maxwell is an Onero® Licensed Coach and ACSM Certified Personal Trainer who blends compassion, expertise, and a deep understanding of lifestyle change. She specializes in bone health, safe strength training, and empowering postmenopausal women to move with confidence and resilience. With her background as a litigation attorney, Kr
Kristin Maxwell is an Onero® Licensed Coach and ACSM Certified Personal Trainer who blends compassion, expertise, and a deep understanding of lifestyle change. She specializes in bone health, safe strength training, and empowering postmenopausal women to move with confidence and resilience. With her background as a litigation attorney, Kristin brings exceptional attention to detail, risk awareness, and client advocacy—strengths that enhance our commitment to safety, clarity, and best practices across the Onero® program.
Nadin Benrey
Kristin Maxwell
Kristin Maxwell
Nadin is an Onero® Licensed Coach and ACSM-Certified Personal Trainer specializing in osteoporosis, aging, diabetes prevention, and safe strength training for post-menopausal women. A bilingual (English/Spanish), National Board-Certified Health & Wellness Coach with a master’s degree and nine years of experience, she is skilled in posture
Nadin is an Onero® Licensed Coach and ACSM-Certified Personal Trainer specializing in osteoporosis, aging, diabetes prevention, and safe strength training for post-menopausal women. A bilingual (English/Spanish), National Board-Certified Health & Wellness Coach with a master’s degree and nine years of experience, she is skilled in posture training, movement modification, and supervised in-person coaching to reduce fracture risk. Nadin also teaches at UC San Diego as an Adjunct Instructor, developing evidence-based curriculum for future health and wellness coaches.
Flo Pierce
Kristin Maxwell
Flo Pierce
Flo Pierce is an Onero® Licensed Coach and seasoned Exercise Physiologist who combines deep expertise in cardiac rehabilitation, bone health, and functional movement with more than three decades of teaching and coaching experience. A lifelong educator and gifted communicator, she specializes in helping older adults move safely, build stre
Flo Pierce is an Onero® Licensed Coach and seasoned Exercise Physiologist who combines deep expertise in cardiac rehabilitation, bone health, and functional movement with more than three decades of teaching and coaching experience. A lifelong educator and gifted communicator, she specializes in helping older adults move safely, build strength, and understand their bodies with clarity and confidence. Flo’s thoughtful, encouraging approach makes her a trusted guide for clients looking to improve strength, resilience, and overall well-being.