Proven · 8.3/10
Zone 2 Cardio
Zone 2 cardio is sustained moderate aerobic training near lactate threshold 1, usually 45-90 minutes at conversational pace, 3-4 times weekly. It earns 7.8/10 because cardiorespiratory fitness predicts mortality strongly: Kodama 2009 found each 1-MET fitness gain associated with 13% lower all-cause mortality risk. Read the full breakdown →
The prediction game
Where does Zone 2 Cardio go in 12 months?
Lock a call and say how sure you are. Right and confident earns the most; a leaderboard spot is the prize. No money, no stakes.
The Crowd’s Call
Rising or fading over the next 12 months? Lock your call and find out if you saw it coming.
Be the first scout on record for Zone 2 Cardio. Permanent credit on this page, plus points when your call resolves.
One call per intervention. It locks the moment you submit (no edits, no cancels) and resolves in 12 months. See the scout leaderboard →
Weigh In
Your input feeds the community signal shown beside my verdict. It informs the board and it never sets the score by itself. How community input works.
Same as above — one verification covers all your entries here.
For education only, not medical advice. Supplements, peptides, and protocols can interact with medications and conditions. Talk to a qualified clinician before starting anything here.