Longevity
- Basic$275VO2 max
- Pro$450VO2 maxRMR

The maximum amount of oxygen your body can use under load — the single best-studied marker of cardiovascular fitness.
A VO2 max test is the better choice if you want a single objective marker of cardiovascular fitness. Lactate testing is the better choice if you are training for a race.
A test session takes 30–40 minutes of actual testing, progressing through 4–8 stages. Allow around an hour in total, which includes the setup and the consultation where Gareth reads your results back to you.
Every test is run and read by Gareth Thomas — Coach to world & national champions · 30+ years. You do not get emailed a PDF and left to interpret it.
Two numbers from the same session: the intensity at which you burn the most fat per minute, and the top of your aerobic range.
The intensity at which you burn the most fat per minute. It drives fuelling strategy for long efforts.
The top of your aerobic range. It sets the upper bound on everything below it and is the marker most tied to long-term health.

Longevity Basic is the VO2 max test on its own. Longevity Pro is VO2 Max + RMR — Both tests in one visit, one consultation.
Both tests in one visit, one consultation.
Every price includes the consultation and a full explanation of your results. Call (858) 361-4733 if you are not sure which to book.
Still not sure? Call (858) 361-4733. There's no sales pitch — if a test isn't worth it for you, he'll say so.
A blood lactate test measures how your body produces and clears lactate as intensity rises, which gives you your aerobic and threshold training zones. A VO2 max test measures the maximum amount of oxygen your body can use during intense exercise, which gives you your aerobic ceiling and your Fat-Max fuelling intensity. Lactate testing is the better choice if you are training for a race; VO2 max is the better choice if you want a single objective marker of cardiovascular fitness.
A test session takes 30 to 40 minutes of actual testing, progressing through 4 to 8 stages. Allow around an hour in total, which includes the setup and the consultation where Gareth reads your results back to you.
No. Roughly half the people tested at the lab are not racing anything. RMR and VO2 max testing are used just as often for body composition, longevity and general health as they are for performance, and the protocol is scaled to whatever you can currently do.
Every 9 to 12 weeks. That is long enough for a training block to produce real physiological change and short enough that your zones do not drift out of date while you are still training to them.
The maximum amount of oxygen your body can use under load — measured in Santa Monica and read back to you in person.