Test 01
Skeletal Muscle Index
How much muscle you carry for your height, measured in-studio. The number that should rise across the decades, not drift down.
Catalyst Performance
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Catalyst Performance
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Pillar 01 of 04
Cardio, stability and strength are all expressed through a body. This pillar measures whether that body is built to last.
An animated field of particles condenses into a dense core as you scroll, representing muscle being built while the waist-to-height ratio falls towards the 0.50 target.
Muscle is the body's largest metabolic organ.
Visceral fat is the counterweight.
Two numbers, one verdict on your metabolic future.
Illustrative
Why it matters
Skeletal muscle is where blood sugar goes, where protein reserves live, and what every decade after 40 quietly taxes. Lose it, and the other three pillars lose the platform they are expressed through.
Visceral fat works in the opposite direction, metabolically active in the wrong way. Body composition is the pillar that governs the slow failure mode: the metabolic diseases that end healthspans early.
Keep your waist below half your height
The waist-to-height rule the evidence keeps confirming
The Catalyst Healthspan Assessment · What we measure
Test 01
How much muscle you carry for your height, measured in-studio. The number that should rise across the decades, not drift down.
Test 02
Where the risk sits. A tape measure that outperforms the bathroom scale as a signal of metabolic health.
Scored against age-and-sex norms
25% of your Healthspan Score
Re-measured every 16 weeks at the Checkpoint
How we train it
The score
Equal weight, by design. No pillar can carry another. Four scores combine into one Healthspan Score out of 10.
All four pillars, 60 minutes, Manulife Tower.
Or preview the system in 3 minutes with the free Healthspan Audit