Most gyms in San Francisco will pair you with a trainer, hand you a program, and call it personalization. Custom Fit SF takes a different position: no program starts until we know exactly where your body is right now.
That means real data — body composition from a DEXA scan, cardiovascular capacity from a VO₂ Max test, metabolic rate from an RMR assessment, and bloodwork reviewed by a registered dietitian. Training follows the data. The guesswork is eliminated before your first session begins.
What Sets San Francisco Personal Training Apart at Custom Fit
Every personal training and partner training membership at Custom Fit SF now includes unlimited DEXA scans and VO₂ Max testing — at no additional cost. This is the first gym in the nation to include these diagnostics as a standard membership benefit.
That matters because the testing isn't a one-time check-in. It becomes a feedback loop. Your trainer sees your body composition shift, your aerobic ceiling move, and your metabolic response change — and adjusts your program in real time. Most personal trainers in San Francisco are working from a client intake form filled out three months ago. Your trainers at Custom Fit are working from last week's data.
The Trainers
Custom Fit coaches come from competitive sports backgrounds. Coach Elijah Lucy — who leads the studio's Run Club — is a former Division I athlete, Big Ten champion, and Olympic Trials qualifier. The coaching staff's approach to biomechanics, strength, and conditioning reflects that background: precise, evidence-based, and built around measurable improvement.
This isn't a gym that hires trainers to fill a schedule. The team is small, the client-to-coach ratio is kept deliberately low, and every program is built around your diagnostic baseline — not a template.
Personal Training + Longevity in One Membership
San Francisco has a growing population of people who train for reasons that go beyond aesthetics: VO₂ Max is one of the strongest predictors of long-term health outcomes. Lean muscle mass protects against metabolic disease. Body fat distribution matters more than the number on a scale.
Custom Fit's personal training memberships are designed around these outcomes. You're not just getting stronger. You're building a documented, measurable picture of how your body is aging — and actively working against the parts you can change.
Locations in San Francisco
Custom Fit SF operates multiple locations, including the original studio at 1844 Market St in Hayes Valley and a newer Downtown SF location. Group classes, Run Club, recovery services (infrared sauna, cold plunge), and all diagnostic testing are available across locations.
Who Personal Training at Custom Fit Is For
- People who've trained before and hit a plateau they can't explain
- High performers who want their fitness to reflect the same rigor they bring to work
- Anyone who's been told "eat less, move more" and found it insufficient
- People interested in longevity who want more than a fitness tracker and a guess
How to Get Started
The recommended starting point is a Baseline Assessment — which includes a DEXA scan, VO₂ Max test, RMR measurement, and an initial consultation to review results and build your first training phase around them.
From there, your trainer builds Phase 1 programming specific to your numbers. Nothing generic. Nothing recycled from a previous client. Your data, your program.