Is Your Breathing Holding You Back?
Find out in 5 Minutes.
Take our free, science-backed assessment to uncover the hidden metrics limiting your endurance, recovery, and focus.
Claire just discovered her RBI score and uncovered breathing patterns that were limiting her performance.
Trusted By Athletes of:
Trusted By Athletes of:
Get a Personalized Breakdown of your Breathing Profile
Find Your Performance Bottleneck
Unlock Your Hidden Strengths
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The Science Behind the Recal Breath Index
The Recal Breath Assessment was created by Anthony Lorubbio after years of working with athletes at altitude and in endurance sports. It measures your breathing performance across five proven tests to give you a complete profile — what we call your Recal Breath Index.
This isn't just about lung capacity — it's about efficiency, endurance, and mechanics. The results show you where you're strong, where you need work, and which protocols can help you improve.
Your breathing is one of the most overlooked factors in performance. The Recal Breath Assessment makes it measurable — and actionable.