Spartan partners with Joi + Blokes to connect bloodwork and performance

Spartan has partnered with precision-health platform Joi + Blokes to launch Project 300, tracking 300 athletes over 200 days to see how their biomarkers connect to actual race performance.

The new performance playbook

As Spartan’s exclusive diagnostic and clinical partner, Joi + Blokes will oversee lab testing across more than 55 biomarkers — from hormones and inflammation to metabolic health — translating those results into personalized training insights.

Each participant receives guided clinician consultations and ongoing health coaching to turn data into action.

Spartan x JOI + Blokes Project 300.

For years, elite competitors have used physiological testing to squeeze out marginal gains. Project 300 extends that precision to the broader fitness community, combining clinical science with sport-level training data to create one of the most comprehensive performance datasets yet.

But this shift isn’t just about providing more raw data; it’s about context. Joi + Blokes CEO Josh Whalen calls it the next phase in diagnostics: moving beyond dashboards to “context, clinical depth, and real-world results.”

The partnership reflects how performance tracking is maturing. The early wearable era gave us raw metrics — steps, heart rate, calories.

Now, the question is what those numbers actually mean: whether your cortisol is sabotaging your training, whether you’re recovered enough to push harder, whether the effort is matching the adaptation. It’s the shift from data to diagnosis.